I'm using prosilver/phpBB3 with a lot of customized colors. Fortunately, with all the great tips here so far I've managed to change the colors without a problem. However: the negative space of the rounded corners remains FFFFFF despite my best efforts to tinker with things to make it otherwise.
I don't understand how the corners are programmed - will it make a difference to colorize the gifs and pngs included in the images folder of the style? So far I have been editing colors in the colours.css file.
I think the rounded edges look pretty good, but if there isn't a way to fix this problem (the white is glaring out from my turquoise background) I'd be curious to know how to remove the rounded corners feature.
Many thanks, I'm afraid I've done a lot of looking and can't figure this out with what's here so far, so I look forward to hearing from you.