Android Studio weird selection of code and how can i undo this

I need help with this, I used the combination of ctrl + right MouseClick, but seems that now can't UNDO this selection ! I tried to do the same combination of ctrl + right MouseClick but does not work ... Please help me solve this, how it is called and how do I get rid of this. Thank you all in advance!

Version of Android Studio: Chipmunk | 2021.2.1 Canary 7

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Solution 1:

That's rainbow highlighting (feature/plugin), just press Escape and it should be gone.

Ctrl + Right Click, rainbow highlight
Alt + Right Click, code block focus (darkens everything else)