Forum Q: https://scratch.mit.edu/discuss/topic/398334/ How to change Pen Color and Sprite Color together.
Pen Color Red = 0, so start with a Red sprite. Pen changes from Red to Red in a cycle of 101. Color Effect changes from Red to Red in a cycle of 200. NB. I have previously put in a bug report that Pen should change from Red to Red in a cycle of 100.