Black on white text will be "good enough" for some people to last another few hundred years or so. Don't think we need to worry too much.
Besides, you need 3x the pixels to do color, and you lose 3x the resolution in 1 dimension to do this, so text will always look fuzzier when you do this.
Color displays will take a few years to get up to par anyways, the fist gen will only have 16-128 color display capability anyways right?
That's not exactly CGA, but it's a huge step back from even the low end SVGA displays of the late 80's