Are you able to select a brick? or must it be all render? I think the portico and left side would make an ideal brick feature. Double story homes are a bit more complicated to select colours for due to their height making features and colours much larger. So getting the balance right can be a little more tricky compared to a single story home.
Note: I never like to 'pimp' my service on this site but i think this is the exact type of facade that would help with a visual of some sort or atleast create your own mood board of colours. The other option is get a colour consult from someone like michelle.