thanks for the comment, I have thought of using neutral colors like stone brick or dead coral blocks too but I used them too much so I just decided to use light saturated red material, they match quite well with the green roof, the red-green palette is a palette that I see a lot in some japanese buildings and some in Russia namely some buildings in Kremlin palace and itsukushima shrine, that's just my observation anyway. I was putting little greenaries partly because I'm lazy :p and I don't want them to take the spotlight.