Should Front Door Be Same Color on Both Sides

It is definitely acceptable to paint each side of the door a different color. As for painting the edges of the door, when the door is open you should see the same color all across.

Can a door be different colors on each side?

It is definitely acceptable to paint each side of the door a different color. As for painting the edges of the door, when the door is open you should see the same color all across.

Does your front door have to match your side door?

Your exterior doors do not all have to be the same color. Many homeowners will choose a vibrant color for the front door and then a color that complements the rest of their home.