The ability to change the colors in your GE for each of the main TRS attributes is great. Especially with the addition of presets, I think it would be amazing to be able to push those color choices to my manipulator handles.
For example, right now I'm using the orange, yellow, purple option for the rotation xyz, but when I am in viewport looking at my manipulator, the colors on the handles don't match what is in my GE, so I have to remember, 'oh yeah, z isn't blue, it's purple now'. It'd make the connection/learning curve of using distinct colors in the GE if they match the manipulator.
I think the color settings for GE curves is great tho!
