The dormers will be painted soon but its too cold atm.

Actual color has more grey.

You could do the door in a soft yellow, but no, no additional colors are needed on the home other than a cheerful door color. If you do want to add a third color other than the door, you could paint the windows (not the window trim) a darker charcoal. Maybe with a hint of purple to it. Adding some snap in muntins would add a bit more interest to the windows, but you wouldn't want to go overboard with that. Adding in some landscaping around the foundation when it warms up would be a nice spring project. If you do a scale drawing now, you could fiddle with it over tthe winter until your plan was perfect on paper.