Default text color and font is messed up

[mmfgamer5]

I'd begin by changing the postbit_color StyleVar (AdminCP > Styles & Templates > Style Manager > [your style] > Style Variable Editor > search for "postbit_color").

If that doesn't work, try disabling plugins (AdminCP > Settings > Options > Plugin/Hook System > "No"). If the problem disappears, then it is due to a plugin (as you said, it could be vBExperience). In which case, you'd have to look through the settings of the plugin, and see if there is the option to change the default text colour.