That's very odd 7of 9, as on my system, I can change the background and text to whatever I like using the method I advised.
Anyway, I realize that this does not solve your IE issue, however, download Mozilla Firefox 0.8, or 0.9 Release Candidate at the following link. You can then specify your colour scheme as follows, under v0.8: -
Tools > Options > General (Fonts & Colours) > Fonts & Colours.
Good luck...........
