Thanks for an awesome plugin - saved me hours with the CSS, I'm quite sure!
I have a light contrast colour (#f5f5f5), light background colour (#d5d5d5) and dark accent colour (#005b9a) - website at http://atmac.org/. The search box magnifier glyph and 'subscribe' button both use the accent colour as background - the magnifier is rendered in a light colour which works well but the 'subscribe' text is black which makes it almost unreadable with the dark accent colour. I think the fix here would be to use the magnifier's colour on the subscribe button too?
I realise it's a tiny tiny tiny thing, but the plugin is so perfect I thought a report would be useful :) I'm happy to just put a bit of CSS in for myself, but I'm guessing others probably have similar issues. Anyway, thanks again for an awesome plugin.