A creamy yellow with hunter green shutters and ivory trim would look good: or these more earth take would also look good: I would remove the overgrown bush by the door, or trim it way back.

It is a nice house but I don't think the high contrast between the trims is helping, especially when juxtaposed with all of that luxurious foliage. The overall effect is a little harsh. I would try using some colors that are more in the same value range as the grey stucco - you might try a warm yellow with some grey in it for the windows and a rust for the shutters and door or a greener grey for the windows and a deep violet for shutters or ? I would remove the large evergreen because it is obscuring the second column (I think?) which confuses the architecture, and I would either adjust the way you prune your shrubs or get something else that is about twice as tall and somewhat open. You could also try putting a lacy tree in the the yard, centered between the two left windows.

Agreed this house looks fine as is. Perhaps add some colors to the landscaping.

Too much gray for me -needs some contrast. Also think that shutters don't add to the clean contemporary lines of your architecture. I would paint the body a deeper blue/gray and the trim a medium taupe or tan. Couldn't duplicate those colors on my program so you'll need to imagine them. Since you already have your walkway to the garage/carport I'm assuming you don't have guests arrive at your entrance any other way so I've removed all the grass and created a garden filled with small blooming ornamental trees, low growing evergreens and blooming shrubs, ornamental grasses and annuals and perennials. Very low maintenance once established and heavily mulched.

I love the pictured yellow, but I would replace the green with a gray/blue med intensity, cuz of the gray roof; remove overgrown tree and replace with red flowering annuals or red chairs or chair cushions for all season welcoming statement at your entry.