I see this post it really old, but if you haven't already, with blue roof, you can go with white or white toned wall paints, or give it a Moroccan look by painting the walls mustard and doors and windows white. This color scheme is very lively.

Unless you have a very beautiful garage door I would paint it a color that blends with the brick IMO they are all too much in your face as is I loved it when the garage was at the back of the house not front and center

I select these colours with the help of other houzzer and expert professional advice and discussion. I also got help from colour paint catalogue. Is it looking good or not? Is there any problem with these colours and their combination. Please guide me in this regard.

White + Grey