Allow .sublime-theme styling of fold.png

Hiya! I'm working on a comprehensive theme/scheme combo and was curious if there was a timeframe for adding .sublime-theme support for the three image files that are still hardcoded to the Default theme. 

These are: 
fold.png
bookmark.png
dot.png

I'd be delighted if you prioritized fold.png in advance of the other three - it's in the body of the file itself and the yellow clashes dramatically with several color schemes. 

Any chance this might surface soon?

Thanks for creating an editor so amenable to customization - I've used and customized nearly all of them (BBEdit, Textmate, Coda, vim, etc.) and this is the most satisfying the process has ever been.