My house is gray, trim is white, mudroom door is white and front door was green (just repainted black). I would paint the mudroom door either the siding color (putty) or the trim color.

Will you be painting the trim around the windows also? Right now the trim is white and your garage door is white. I think they should match. You could paint trim/garage door beige like the little molding below the stone part of your house. That qould look good, I think. Your front door could be any color...mine is red and I love it.

All the same color because it's essentially one in the same element. In other words, you can have a door with no side lights but you can't have side lights without a door. That's why it doesn't make sense to paint the side lights a different color from the door.

Post the picture in a comment wait until each picture is no longer grayed then submit you need to wait for each picture to be no longer grayed before adding another picture to the same comment/