Added colour and date editor auto close on selection.

core/field_colour.js

@@ -291,6 +291,7 @@ Blockly.FieldColour.prototype.onClick_ = function(e) {
   var colour = cell && cell.label;
   if (colour !== null) {
     this.setValue(colour);
+    Blockly.DropDownDiv.hideIfOwner(this);
   }
 };
 

core/field_date.js

@@ -252,6 +252,7 @@ Blockly.FieldDate.prototype.dropdownDispose_ = function() {
 Blockly.FieldDate.prototype.onDateSelected_ = function(event) {
   var date = event.date ? event.date.toIsoString(true) : '';
   this.setValue(date);
+  Blockly.DropDownDiv.hideIfOwner(this);
 };
 
 /**