OK, then, that shows what I know... You are all correct - this is, indeed part of Fusion itself. That menu item only appears when Component Color Cycling is enabled (which is why I didn't see it). That's probably why you don't see it, @lukas-runge This command will re-assign the color of the selected component used in this mode, for the current session. Its purpose is exactly to solve this problem - the random color assignment puts the same color on two adjacent components. This command allows you to select one or more components, and change that random assignment, to help you distinguish those components from others. It's been in Fusion since about March 2019 - I think it was added when the number of colors was bumped up from 10 to 32 (I think that is the number now).
[edit] - one more thing I didn't know. This statement above: "will re-assign the color of the selected component used in this mode, for the current session" is false. It looks like Fusion does save the component color cycling color, so you will get the same color the next time. How about that? If my goal for every day is to learn something, I guess I can go home for the day now.
Jeff Strater
Engineering Director