If it's only your email, I would suspect a software problem. Please provide more details. For starters, what email client are you using? You mention email, but are there any other times that you have problems with seeing font color?
I have a fairly new Samsung flatscreen CRT and on numerous occasions I am finding that it is not giving me color when I should be getting it. For example in my email account, it has a place to add background or font color but I see no color at all in these areas?? I also see no color in incoming emails, unless on an attachment - which yes those are in color. Anyone know any answer for this??