I like the colors. It was my first thought too. I have to disagree with you about the house. To me it is not even a bit ugly, if fact I like it. I even like the landscaping and it looks intelligently designed. The plants have simply not had enough time to grow. I think you should shear the hedge under the porch so each shrub is the same height. If there is room in the beds plant low blooming perennials in front of the shrubs.

If the Pine is not a liability then it should stay. A tree is an asset, it is not blocking the entrance, and it provides shade. The only way I would consider removing it is if the house faces North.

I like red front doors.

It has a nice woodsy look to it, I don't like the shutters though. Maybe a darker colored roof would help. And a stronger dark red for the front door and different trim.