Which keys can be pressed to change the cuboid/frame selector color?

pressing the l key i hope help for you

Explanation:

the fingers on your left hand should be placed over the A, S, D, and F keys and the fingers on your right hand should be placed over the J, K, L, and ; keys. These keys are considered the home row keys. Your thumbs should either be in the air or very lightly touching the spacebar key.the fingers on your left hand should be placed over the A, S, D, and F keys and the fingers on your right hand should be placed over the J, K, L, and ; keys. These keys are considered the home row keys. Your thumbs should either be in the air or very lightly touching the spacebar key.

if im not mistaken its a. collective emotional arousal