Peter Serwylo 74795d2f7a Don't use attr for color value in drawables.
According to the following this is not supported:

 * http://stackoverflow.com/a/13471695/2391921

This uses the approach in that SO answer, by extracting the attribute to
instead point at a drawable, and have one drawable for each theme.

Fixes #979.
2017-04-26 10:06:00 +10:00
..
2017-04-19 00:19:10 +02:00