white

Not sure if you leaning toward adding more brown accents to tie in with using brown gutters. I think using white keeps your options open for adding other color accents for curb appeal. The front door is really nice, perhaps you'll paint the door a color that really livens up the entryway, like maybe a grey-green color. Could also paint the bench similar color as the nice lantern light, door hardware and house numbers.

^^ agree - I think gutters look best when they blend and are not chosen to be a feature

Gutters are not decor items so white to make them as invisible as possible.

I would go with white.

Not white. And paint the fascia board brown BEFORE you have the gutters installed.

Also I would paint the front door and garage door to match

The yellow color of the stucco is a very weak statement. I would change it to white.