Exterior house color suggestions
Plum Crazy or Panther Pink! You said you wanted to brighten it.
Just kidding. House paint color is always a touchy area. Maybe you could take a look around the neighborhood and see something you like.
As 'badsport' said, raising the skirt on that tree will certainly help. You can always keep the white, use a contrasting trim color, and add some interesting trim features like maybe shutters on the windows. A big help would be some inexpensive landscaping (flowers and bushes) to add some color and curb appeal.
Wow, now I feel like I've been watching to much HGTV!