Not true at all. Color correction can be keyframed, but it applies itself to the whole clip by default.
If you’ve got AE Pro you will have a gazillion ways to make changes. There is Color Finesse, there is levels, curves, etc…
Premiere Pro 2 has an awesome three-way color corrector, and the handy Fast Color Corrector. And a host of new features to help with CC.
You can do secondary color correction, etc… The list goes on.
Read the manual of AE and if you have PP, that too. It will teach you all about white balance, broadcast save colors, etc…
ALSO go into AE 7.0 and under effects you will see a folder called Color Correction. Play with those effects so that you can see what they do.
– Derrick