Some commit after 4.62 has broken ElvUI and Quartz castbar coloring in Classic WOTLK. Changing castbar texture in Quartz fixes the issue, but a reload breaks it again.

I've narrowed it down to these changes: 4d7a88b...c193035

I can't try individual commits because they're broken and cause lua errors.

This is how it now looks:

This is what it looked like with 4.62:

@Azilroka the problem seems to be that Quartz skin used to call AS:SkinBackdropFrame(self.Bar, nil, true) which didn't StripTexture the Bar, but now this has been replace by a call to S:HandleFrame(self.Bar, true) which ends up always stripping textures.