I was wondering if anybody had any ideas in regards to a problem I'm having using dark themes with XFCE. The Iceweasel/Firefox problem is easily fixed, but this one I haven't seen mentioned anywhere. I'm using the Spotify client and if I'm using any dark theme with it, the input boxes take on the base background color of the theme. Examples:

Spotify Login
Spotify Main Screen

I've tried launching Spotify with a different theme using a gtkrc file, but it did nothing. It's probably worth noting that Spotify uses QT, which I think I read had some problems processing themes. Tried using qtconfig and just poking around with some of the options, but it seemed to have no effect at all. I'd appreciate any insight into how to fix or get around this. I really prefer the dark themes, they're much easier on the eyes, but I use Spotify very frequently so this gets in the way.

I'm using Debian Wheezy and XFCE 4.8.