How do you determine what wall would be the accent wall?

I’m thinking I want to do 3 walls as off white and then have a wall be a dark green. Then depending on whether baby is a boy or girl I’ll add accents.

But how do I determine which wall should be green? Really I’m stuck between 2 walls because one has a huge window so that’s out and the other is small because that’s where the closet is so that’s out.

Should it be the wall with the door across from the window? Or the long wall with nothing on it? (The room is rectangular shaped).

Does it depend on where the crib goes?