Update images.qrc

Author: stra2da

images/images.qrc

@@ -555,6 +555,7 @@
         <file>themes/default/propertyicons/settings.svg</file>
         <file>themes/default/propertyicons/stylepreset.svg</file>
         <file>themes/default/propertyicons/symbology.svg</file>
+        <file>themes/default/propertyicons/colors.svg</file>
         <file>themes/default/propertyicons/system.svg</file>
         <file>themes/default/propertyicons/transparency.svg</file>
         <file>themes/default/propertyicons/spacer.svg</file>