I agree with Boltster on the brown, though dull colors are better suited for a more realistic build where color scheme's boasting the likes of cherry red and indigo blue aren't common place in daily life lol.
cherry red and indigo blue are common colors for objects that wouldn't be in a build. For instance, my jacket is cherry red, there are some indigo files in a pile, i can see a bright red bag on a shelf, there's a lime green box near the bag, ect. you wouldn't usually put these things in a build because they are way too small to actually be built using the 1/3 brick flat setup.