Hi,

Happy to release a new features for TimeOffset which include the last Keyframe Label Color on After Effects (Beta), may be in the normal version soon.

In the same way, i try to make easy to use and simple but with power to retime your animation.

This new option will only work on Beta but last version normally work too with version before.

Button for Color Label Keyframes Selected:

Select your label keyframes and click on keyframe button to skip that label Keyframes when retiming
Ctrl + Click: open the new panel. Show your selection in checkbox. Clic on number color to set a new color on your keyframe select. Click on checkbox will add the color on your selection.
Alt+ Click: Reverse the selection

Check the Tutorial video to know more here !

Thank you for your all feedbacks and have fun with it