Add outline color to button, textarea, input (#3822)

* add outline-color to button, textarea, input

* add select elements, move to top

* use primary color

themes/tiddlywiki/vanilla/base.tid

@@ -176,6 +176,10 @@ dl dt {
 	margin-top: 6px;
 }
 
+button, textarea, input, select {
+	outline-color: <<colour primary>>;
+}
+
 textarea,
 input[type=text],
 input[type=search],