I actually love the color of the brick! And I love it with the shingles.
However...
the shutters are not looking good with it, neither color, size or how they are hung. So first of all, here's a post I wrote that tells you the correct way to size and hang exterior shutters.

Dress Up Your House With Shutters, the Right Way!

Then I'd not do any red accents, it fights with the roof color, and takes it from a nice golden tan color to make it look orange!

Instead of the red, you could do many colors for the shutters, correctly sized shutters that is, and the front door... such as Black, dark brown, blue... any of those would look great with the pale yellow and brown roof.

Also, you need to add more landscape. A short picket fence in white on the yard side of the sidewalk would look great. It would repeat the white trim around the windows, and pull the structure of the house out more. You could put it a couple of feet into the yard from the sidewalk, running parallel to the sidewalk, then you'd have a place to add gardens on both sides of the fence.

Hope some of these ideas help you out. Liz www.HometoCottage.com