The blue-gray color that is on the trim.

Dark green to mirror the trees.

Maybe something similar to BM Gentleman's Gray. It would look good with your red brick and your trim color.

Agree with trim color.

I agree, with the trim color.

Match the blue trim color

What do you think of brown for front door and garage door?

I would say that since the house is more of a beige neutral, I would avoid the browns and tans and go with a blue or green, like many others have said. You could echo the trim (again, like others have said) by doing a pretty slate blue.

Behr hypnotic possibly?

If you are keeping the blue trim IMO the same blue for the door . I think the blue trim is not attractive but it is there so no other color IMO added . Some really good landscaping should be where you add some color .

I think the right coral could be fun