I wish there was some way of changing the text buffer colors. The very few times I tune into 200 and I am flying above the clouds I can't even read what it says cuz of the white text....I know I know 
I would like to change the colors, too, but for a slightly different reason. When our numbers are low, our squad will sometimes wing up with a couple of other players from another squad. We tune to a channel, and that channel comes up yellow in the text box vs. the normal red squad color. However, the so-and-so-landed-XXXX-damage messages are also yellow, and it is easy to lose the yellow tunable channel messages in the "noise."
Perhaps some text (CM color, for example) shouldn't be available, but it would be helpful if some of other colors could be selected.