Not sure if you plan to paint or replace the siding, but painting all the green trim white would be a vast improvement. You might consider power washing the brick.

If you want to keep the green trim, you could paint the white part a pale sage green. You already have a complementary color scheme, and so that limits you to red + green, or you could switch to a split complementary scheme, but that would probably get too busy.

If you get rid of the green trim, then you have more options. The green part could be painted black or gray instead of white and still have more options.

thanks .I am planning to change green trim to some other color. I am thinking for using Burnished Clay for exterior and white for trims. What do you think? Suggest me if there is any other alternates works good