diff --git a/HISTORY.md b/HISTORY.md
index 7b5e25c9..140004f4 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -81,6 +81,7 @@
 * removed "catch" etc. from "tools" library (has been moved to "iteration" lib)
 * updated "cases" library (for new HOF prims)
 * updated "bignums" library (for new HOF prims)
+* updated "crayons" library (for new HOF prims)
 
 ### 2019-04-25
 * updated German translation (for new HOF prims)
diff --git a/libraries/crayons.xml b/libraries/crayons.xml
index 9ec3bb8c..d00bcdd9 100644
--- a/libraries/crayons.xml
+++ b/libraries/crayons.xml
@@ -1,120 +1 @@
-<blocks app="Snap! 4.1, http://snap.berkeley.edu" version="1"><block-definition s="multiline %&apos;text&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%code"></input></inputs><script><block s="doReport"><block var="text"/></block></script></block-definition><block-definition s="set pen to crayon %&apos;which&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"><options>grays={
-0 black #000000=0
-1 gray7 #121212=1
-2 gray14 #242424=2
-3 gray21 #363636=3
-4 gray28 #484848=4
-5 gray36 #5b5b5b=5
-6 gray43 #6d6d6d=6
-7 gray50 #7f7f7f=7
-8 gray57 #919191=8
-9 gray64 #a3a3a3=9
-10 gray71 #b6b6b6=10
-11 gray78 #c8c8c8=11
-12 gray85 #dadada=12
-13 gray92 #ececec=13
-14 white #ffffff=14
-}
-pinks={
-15 deep pink #ff1493=15
-16 amaranth #e52b50=16
-17 bright pink #ff007f=17
-18 hot pink #ff69b4=18
-19 raspberry #e30b5d=19
-}
-reds={
-20 red #ff0000=20
-21 candy apple red #ff0800=21
-22 dark candy apple red #a40000=22
-23 sanguine #c00000=23
-24 currant #f31112=24
-25 firebrick #b22222=25
-26 cherry #990000=26
-27 crimson #c90016=27
-28 coquelicot #ff3800=28
-29 burgundy #900020=29
-}
-browns={
-30 saddle brown #8b4513=30
-31 copper #b87333=31
-32 golden brown #996515=32
-33 brown #964b00=33
-34 sepia #704214=34
-35 maroon #800000=35
-36 chocolate #d2691e=36
-37 cinnamon #7b3f00=37
-38 chestnut #954535=38
-39 kobicha #6b4423=39
-}
-oranges={
-40 orange #ff7f00=40
-41 pumpkin #ff7518=41
-42 ochre #cc7722=42
-43 dark orange ff8c00=43
-44 tangerine #f28500=44
-45 burnt orange #cc5500=45
-46 web orange #ffa500=46
-47 Pantone orange #ff5800=47
-48 Spanish orange #e86100=48
-49 carrot #ed9121=49
-}
-yellows={
-50 yellow #ffff00=50
-51 saffron #f4c430=51
-52 sandstorm #ecd540=52
-53 canary #ffef00=53
-54 egg yolk #fee33e=54
-55 rubber duck #fbe108=55
-56 dark goldenrod #b8860b=56
-57 goldenrod #daa520=57
-58 gold #ffd700=58
-59 mustard #ffdb58=59
-}
-greens={
-60 lime #00ff00=60
-61 emerald #50c878=61
-62 dark pastel green #03c03c=62
-63 forest green #228b22=63
-64 green 008000=64
-65 dark green 006400=65
-66 mint #3eb489=66
-67 sea green #2e8b57=67
-68 apple green #8db600=68
-69 bright green #66ff00=69
-}
-cyans={
-70 aqua (cyan) #00ffff=70
-71 iceberg #71a6d2=71
-72 cadet blue #5f9ea0=72
-73 cerulean #007ba7=73
-74 dark cyan #008b8b=74
-75 teal #008080=75
-76 light sky blue #87cefa=76
-77 deep sky blue #00bfff=77
-78 dodger blue #1e90ff=78
-79 azure #007fff=79
-}
-blues={
-80 blue #0000ff=80
-81 steel blue #4682b4=81
-82 royal blue #4169e1=82
-83 cobalt #0047ab=83
-84 dark powder blue #003399=84
-85 navy blue #000080=85
-86 midnight blue #191970=86
-87 slate blue #6a5acd=87
-88 denim #1560bd=88
-89 cornflower #6495ed=89
-}
-violets={
-90 violet #8f00ff=90
-91 blue violet #8a2be2=91
-92 x11 purple #a020f0=92
-93 dark orchid #9932cc=93
-94 indigo #4b0082=94
-95 magenta (fuchia) #ff00ff=95
-96 web violet #ee82ee=96
-97 dark magenta #8b008b=97
-98 purple #7f007f=98
-99 grape #6f2da8=99
-}</options></input></inputs><script><block s="doDeclareVariables"><list><l>colors</l><l>color</l></list></block><block s="doSetVar"><l>colors</l><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportTextSplit"><l></l><l>,</l></block></autolambda><list></list></block><list><block s="reportTextSplit"><custom-block s="multiline 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s="reportJSFunction"><list><l>r</l><l>g</l><l>b</l></list><l>this.setColor(new Color(r, g, b));</l></block><list><block var="r"/><block var="g"/><block var="b"/></list></block></script></block-definition><block-definition s="RGB color" type="reporter" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="evaluate"><block s="reportJSFunction"><list><l></l></list><l>return new List([this.color.r, this.color.g, this.color.b]);</l></block><list></list></block></block></script></block-definition><block-definition s="change crayon by %&apos;diff&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><custom-block s="set pen to crayon %n"><block s="reportSum"><custom-block s="nearest crayon to %l"><custom-block s="RGB color"></custom-block></custom-block><block 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var="lists"/></list></block></block></script></block></script></block></script></block-definition><block-definition s="empty? %&apos;data&apos;" type="predicate" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportEquals"><block var="data"/><block s="reportNewList"><list></list></block></block></block></script></block-definition></blocks>
\ No newline at end of file
+<blocks app="Snap! 5.0, http://snap.berkeley.edu" version="1"><block-definition s="multiline %&apos;text&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%code"></input></inputs><script><block s="doReport"><block var="text"/></block></script></block-definition><block-definition s="set pen to crayon %&apos;which&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"><options>grays={&#xD;0 black #000000=0&#xD;1 gray7 #121212=1&#xD;2 gray14 #242424=2&#xD;3 gray21 #363636=3&#xD;4 gray28 #484848=4&#xD;5 gray36 #5b5b5b=5&#xD;6 gray43 #6d6d6d=6&#xD;7 gray50 #7f7f7f=7&#xD;8 gray57 #919191=8&#xD;9 gray64 #a3a3a3=9&#xD;10 gray71 #b6b6b6=10&#xD;11 gray78 #c8c8c8=11&#xD;12 gray85 #dadada=12&#xD;13 gray92 #ececec=13&#xD;14 white #ffffff=14&#xD;}&#xD;pinks={&#xD;15 deep pink #ff1493=15&#xD;16 amaranth #e52b50=16&#xD;17 bright pink #ff007f=17&#xD;18 hot pink #ff69b4=18&#xD;19 raspberry #e30b5d=19&#xD;}&#xD;reds={&#xD;20 red #ff0000=20&#xD;21 candy apple red #ff0800=21&#xD;22 dark candy apple red #a40000=22&#xD;23 sanguine #c00000=23&#xD;24 currant #f31112=24&#xD;25 firebrick #b22222=25&#xD;26 cherry #990000=26&#xD;27 crimson #c90016=27&#xD;28 coquelicot #ff3800=28&#xD;29 burgundy #900020=29&#xD;}&#xD;browns={&#xD;30 saddle brown #8b4513=30&#xD;31 copper #b87333=31&#xD;32 golden brown #996515=32&#xD;33 brown #964b00=33&#xD;34 sepia #704214=34&#xD;35 maroon #800000=35&#xD;36 chocolate #d2691e=36&#xD;37 cinnamon #7b3f00=37&#xD;38 chestnut #954535=38&#xD;39 kobicha #6b4423=39&#xD;}&#xD;oranges={&#xD;40 orange #ff7f00=40&#xD;41 pumpkin #ff7518=41&#xD;42 ochre #cc7722=42&#xD;43 dark orange ff8c00=43&#xD;44 tangerine #f28500=44&#xD;45 burnt orange #cc5500=45&#xD;46 web orange #ffa500=46&#xD;47 Pantone orange #ff5800=47&#xD;48 Spanish orange #e86100=48&#xD;49 carrot #ed9121=49&#xD;}&#xD;yellows={&#xD;50 yellow #ffff00=50&#xD;51 saffron #f4c430=51&#xD;52 sandstorm #ecd540=52&#xD;53 canary #ffef00=53&#xD;54 egg yolk #fee33e=54&#xD;55 rubber duck #fbe108=55&#xD;56 dark goldenrod #b8860b=56&#xD;57 goldenrod #daa520=57&#xD;58 gold #ffd700=58&#xD;59 mustard #ffdb58=59&#xD;}&#xD;greens={&#xD;60 lime #00ff00=60&#xD;61 emerald #50c878=61&#xD;62 dark pastel green #03c03c=62&#xD;63 forest green #228b22=63&#xD;64 green 008000=64&#xD;65 dark green 006400=65&#xD;66 mint #3eb489=66&#xD;67 sea green #2e8b57=67&#xD;68 apple green #8db600=68&#xD;69 bright green #66ff00=69&#xD;}&#xD;cyans={&#xD;70 aqua (cyan) #00ffff=70&#xD;71 iceberg #71a6d2=71&#xD;72 cadet blue #5f9ea0=72&#xD;73 cerulean #007ba7=73&#xD;74 dark cyan #008b8b=74&#xD;75 teal #008080=75&#xD;76 light sky blue #87cefa=76&#xD;77 deep sky blue #00bfff=77&#xD;78 dodger blue #1e90ff=78&#xD;79 azure #007fff=79&#xD;}&#xD;blues={&#xD;80 blue #0000ff=80&#xD;81 steel blue #4682b4=81&#xD;82 royal blue #4169e1=82&#xD;83 cobalt #0047ab=83&#xD;84 dark powder blue #003399=84&#xD;85 navy blue #000080=85&#xD;86 midnight blue #191970=86&#xD;87 slate blue #6a5acd=87&#xD;88 denim #1560bd=88&#xD;89 cornflower #6495ed=89&#xD;}&#xD;violets={&#xD;90 violet #8f00ff=90&#xD;91 blue violet #8a2be2=91&#xD;92 x11 purple #a020f0=92&#xD;93 dark orchid #9932cc=93&#xD;94 indigo #4b0082=94&#xD;95 magenta (fuchia) #ff00ff=95&#xD;96 web violet #ee82ee=96&#xD;97 dark magenta #8b008b=97&#xD;98 purple #7f007f=98&#xD;99 grape #6f2da8=99&#xD;}</options></input></inputs><script><block s="doDeclareVariables"><list><l>colors</l><l>color</l></list></block><block s="doSetVar"><l>colors</l><block s="reportMap"><block s="reifyReporter"><autolambda><block s="reportTextSplit"><l></l><l>,</l></block></autolambda><list></list></block><block s="reportTextSplit"><custom-block s="multiline %code"><l>0,0,0&#xD;18,18,18&#xD;36,36,36&#xD;54,54,54&#xD;72,72,72&#xD;91,91,91&#xD;109,109,109&#xD;127,127,127&#xD;145,145,145&#xD;163,163,163&#xD;182,182,182&#xD;200,200,200&#xD;218,218,218&#xD;236,236,236&#xD;255,255,255&#xD;255,20,147&#xD;229,43,80&#xD;255,0,127&#xD;255,105,180&#xD;227,11,93&#xD;255,0,0&#xD;255,8,0&#xD;164,0,0&#xD;192,0,0&#xD;243,17,18&#xD;178,34,34&#xD;153,0,0&#xD;201,0,22&#xD;255,56,0&#xD;144,0,32&#xD;139,69,19&#xD;184,115,51&#xD;153,101,21&#xD;150,75,0&#xD;112,66,20&#xD;128,0,0&#xD;123,63,0&#xD;210,105,30&#xD;149,69,53&#xD;107,68,35&#xD;255,127,0&#xD;255,117,24&#xD;204,119,34&#xD;255,140,0&#xD;242,133,0&#xD;204,85,0&#xD;255,165,0&#xD;255,88,0&#xD;232,97,0&#xD;237,145,33&#xD;255,255,0&#xD;244,196,48&#xD;236,213,64&#xD;255,239,0&#xD;254,227,62&#xD;251,225,8&#xD;184,134,11&#xD;218,165,32&#xD;255,215,0&#xD;255,219,88&#xD;0,255,0&#xD;80,200,120&#xD;3,192,60&#xD;34,139,34&#xD;0,128,0&#xD;0,100,0&#xD;62,180,137&#xD;46,139,87&#xD;141,182,0&#xD;102,255,0&#xD;0,255,255&#xD;113,166,210&#xD;95,158,160&#xD;0,123,167&#xD;0,139,139&#xD;0,128,128&#xD;135,206,250&#xD;0,191,255&#xD;30,144,255&#xD;0,127,255&#xD;0,0,255&#xD;70,130,180&#xD;65,105,225&#xD;0,71,171&#xD;0,51,153&#xD;0,0,128&#xD;25,25,112&#xD;106,90,205&#xD;21,96,189&#xD;100,149,237&#xD;143,0,255&#xD;138,43,226&#xD;160,32,240&#xD;153,50,204&#xD;75,0,130&#xD;255,0,255&#xD;238,130,238&#xD;139,0,139&#xD;127,0,127&#xD;111,45,168</l></custom-block><l><option>line</option></l></block></block></block><block s="doSetVar"><l>color</l><block s="reportListItem"><block s="reportSum"><block s="reportModulus"><block var="which"/><l>100</l></block><l>1</l></block><block var="colors"/></block></block><custom-block s="set pen color to r: %n g: %n b: %n"><block s="reportListItem"><l>1</l><block var="color"/></block><block s="reportListItem"><l>2</l><block var="color"/></block><block s="reportListItem"><l>3</l><block var="color"/></block></custom-block></script></block-definition><block-definition s="nearest crayon to %&apos;old color&apos;" type="reporter" category="pen"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doDeclareVariables"><list><l>colors</l><l>min value</l><l>min index</l><l>index</l><l>distance</l><l>color</l></list></block><block s="doSetVar"><l>min value</l><l>1000</l></block><block s="doSetVar"><l>min index</l><l>-1</l></block><block s="doSetVar"><l>index</l><l>1</l></block><block s="doSetVar"><l>colors</l><block s="reportMap"><block s="reifyReporter"><autolambda><block s="reportTextSplit"><l></l><l>,</l></block></autolambda><list></list></block><block s="reportTextSplit"><custom-block s="multiline %code"><l>0,0,0&#xD;18,18,18&#xD;36,36,36&#xD;54,54,54&#xD;72,72,72&#xD;91,91,91&#xD;109,109,109&#xD;127,127,127&#xD;145,145,145&#xD;163,163,163&#xD;182,182,182&#xD;200,200,200&#xD;218,218,218&#xD;236,236,236&#xD;255,255,255&#xD;255,20,147&#xD;229,43,80&#xD;255,0,127&#xD;255,105,180&#xD;227,11,93&#xD;255,0,0&#xD;255,8,0&#xD;164,0,0&#xD;192,0,0&#xD;243,17,18&#xD;178,34,34&#xD;153,0,0&#xD;201,0,22&#xD;255,56,0&#xD;144,0,32&#xD;139,69,19&#xD;184,115,51&#xD;153,101,21&#xD;150,75,0&#xD;112,66,20&#xD;128,0,0&#xD;123,63,0&#xD;210,105,30&#xD;149,69,53&#xD;107,68,35&#xD;255,127,0&#xD;255,117,24&#xD;204,119,34&#xD;255,140,0&#xD;242,133,0&#xD;204,85,0&#xD;255,165,0&#xD;255,88,0&#xD;232,97,0&#xD;237,145,33&#xD;255,255,0&#xD;244,196,48&#xD;236,213,64&#xD;255,239,0&#xD;254,227,62&#xD;251,225,8&#xD;184,134,11&#xD;218,165,32&#xD;255,215,0&#xD;255,219,88&#xD;0,255,0&#xD;80,200,120&#xD;3,192,60&#xD;34,139,34&#xD;0,128,0&#xD;0,100,0&#xD;62,180,137&#xD;46,139,87&#xD;141,182,0&#xD;102,255,0&#xD;0,255,255&#xD;113,166,210&#xD;95,158,160&#xD;0,123,167&#xD;0,139,139&#xD;0,128,128&#xD;135,206,250&#xD;0,191,255&#xD;30,144,255&#xD;0,127,255&#xD;0,0,255&#xD;70,130,180&#xD;65,105,225&#xD;0,71,171&#xD;0,51,153&#xD;0,0,128&#xD;25,25,112&#xD;106,90,205&#xD;21,96,189&#xD;100,149,237&#xD;143,0,255&#xD;138,43,226&#xD;160,32,240&#xD;153,50,204&#xD;75,0,130&#xD;255,0,255&#xD;238,130,238&#xD;139,0,139&#xD;127,0,127&#xD;111,45,168</l></custom-block><l><option>line</option></l></block></block></block><block s="doWarp"><script><block s="doRepeat"><l>100</l><script><block s="doSetVar"><l>color</l><block s="reportListItem"><block var="index"/><block var="colors"/></block></block><block s="doIf"><block s="reportEquals"><block var="color"/><block var="old color"/></block><script><block s="doReport"><block s="reportDifference"><block var="index"/><l>1</l></block></block></script></block><block s="doSetVar"><l>distance</l><block s="reportSum"><block s="reportMonadic"><l><option>abs</option></l><block s="reportDifference"><block s="reportListItem"><l>1</l><block var="color"/></block><block s="reportListItem"><l>1</l><block var="old color"/></block></block></block><block s="reportSum"><block s="reportMonadic"><l><option>abs</option></l><block s="reportDifference"><block s="reportListItem"><l>2</l><block var="color"/></block><block s="reportListItem"><l>2</l><block var="old color"/></block></block></block><block s="reportMonadic"><l><option>abs</option></l><block s="reportDifference"><block s="reportListItem"><l>3</l><block var="color"/></block><block s="reportListItem"><l>3</l><block var="old color"/></block></block></block></block></block></block><block s="doIf"><block s="reportLessThan"><block var="distance"/><block var="min value"/></block><script><block s="doSetVar"><l>min value</l><block var="distance"/></block><block s="doSetVar"><l>min index</l><block var="index"/></block></script></block><block s="doChangeVar"><l>index</l><l>1</l></block></script></block><block s="doReport"><block s="reportDifference"><block var="min index"/><l>1</l></block></block></script></block></script></block-definition><block-definition s="set pen color to r: %&apos;r&apos; g: %&apos;g&apos; b: %&apos;b&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n">255</input><input type="%n">0</input><input type="%n">0</input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>r</l><l>g</l><l>b</l></list><l>this.setColor(new Color(r, g, b));</l></block><list><block var="r"/><block var="g"/><block var="b"/></list></block></script></block-definition><block-definition s="RGB color" type="reporter" category="pen"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><block s="evaluate"><block s="reportJSFunction"><list><l></l></list><l>return new List([this.color.r, this.color.g, this.color.b]);</l></block><list></list></block></block></script></block-definition><block-definition s="change crayon by %&apos;diff&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><custom-block s="set pen to crayon %n"><block s="reportSum"><custom-block s="nearest crayon to %l"><custom-block s="RGB color"></custom-block></custom-block><block var="diff"/></block></custom-block></script></block-definition></blocks>
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