Here's a slightly darker on-screen blue that I think looks more like the on-house color we're thinking of right now. If you look at the white trim version and the purple trim version together, you can sort of imagine what it would like if you had half as much of each. The porch railings, the borders around the windows (which we can't change), and some gingerbread detailing will be white.
I tried reversing the purple / red too -- not sure if it looks better with purple (1st pic) as a more dominant trim or red (3rd pic). Which do you prefer?