Adobe Animate character animtion

[ankittheleo]

I've created this gif using Animate CC. I want the red ball to be fill the covered path to red with its motion and in the end 'B' will be in red color. How it can be possible in Animate CC? Should i need to fill each point of the path manually  or any automated method?

[kglad · Accepted solution]

on layers above your b and red ball create a red b that's masked by what you want to display (the red b appearing to be drawn by the ball).