Your house looks more Spanish than Colonial in my opinion. Changing the garage doors and shutters would have more dramatic effects rather than changing the exterior paint.

I agree with dytecture

Ditto -
There's nothing even remotely "Colonial" about this house...
..but the wood garage doors & shutters do a great deal to make the house live up to it's Spanish aspirations.

I'd also look into replacing that massive concrete driveway - Pavers with grass or other creeping vegetation in between would make it appear less like an airpoirt runway out front.

Thank you so much for the advice! Love the garage door and driveway ideas.... Thanks again!