How do we fix this? Help!

This house is close to the road, and local rules prevent adding anything that extends beyond the current structure (like a roof over the front door). The interior is functional, but the exterior feels plain and out of place against the trees behind it.

We’re thinking of changing the color to brown or green to blend in and possibly switching to shake siding for texture. Would shutters work despite the windows being asymmetrical? Any ideas for adding character or curb appeal without structural changes would be greatly appreciated!