More Plugins - Button: use primary color (#4075)

* Update AddPlugins.tid

* Update base.tid

* Update AddPlugins.tid

* Update AddPlugins.tid

* Update base.tid

core/ui/ControlPanel/Plugins/AddPlugins.tid

@@ -2,6 +2,6 @@ title: $:/core/ui/ControlPanel/Plugins/AddPlugins
 
 \define lingo-base() $:/language/ControlPanel/Plugins/
 
-<$button message="tm-modal" param="$:/core/ui/ControlPanel/Modals/AddPlugins" tooltip={{$:/language/ControlPanel/Plugins/Add/Hint}} class="tc-btn-big-green" style="background:blue;">
+<$button message="tm-modal" param="$:/core/ui/ControlPanel/Modals/AddPlugins" tooltip={{$:/language/ControlPanel/Plugins/Add/Hint}} class="tc-btn-big-green tc-primary-btn">
 {{$:/core/images/download-button}} <<lingo Add/Caption>>
 </$button>

themes/tiddlywiki/vanilla/base.tid

@@ -525,6 +525,10 @@ html body.tc-body .tc-btn-rounded:hover svg {
 	fill: <<colour download-foreground>>;
 }
 
+.tc-primary-btn {
+ 	background: <<colour primary>>;
+}
+
 .tc-sidebar-lists input {
 	color: <<colour foreground>>;
 }