Formatting buttons invisible when using white text on black

Formatting buttons invisible when using white text on black

Just registered on Zoho today after reading a tech blog that praised you guys over Google Docs (which I've been using for 4 months now). I like what I see so far, but just like G-Docs, all the formatting buttons are not visible at all. Only buttons that have text on them are visible. I'm sure this has to do with my using white text on a black background in Firefox (always auto-updated to the latest FF version).

This setting is easier on my eyes and saves a lot of energy with my CRT monitor, but I've noticed that many sites have icons that become invisible with my white text on black b/g setting. I also leave the option in FFox for "Allow sites to choose their own colours" unchecked.

For example in Yahoo Mail beta, the folder icons to the left of the folder names (no biggie, this!), or the "download" button on TechRepublic's Windoze tips, or the "+" buttons to expand a news item in iGoogle (similar to "My Yahoo" in building a custom-content page. All of them invisible with my FF content setting, which I don't want to change for readability reasons. When I revert to the standard black text on white background, everything's visible!

Any suggestions that could eliminate this "problem" would be much appreciated! And thanks for the great service Zoho's offering. Anything I can do to avoid using M$ Word!