I want to re-do my room for the first time

Hi, im a metal yin sheep, with 9 kua number. Since i cant renovate my whole house as im cohabiting, i would like to do up my room. I have windows on my east, slightly to the north east direction and my room door (West) is exactly opposite the windows. There is a beam on the same wall of my room's door. Planning to add a cupboard against the wall below the beam before arranging my bed infront of that cupboard so that i can face the east when im sleeping. What are the colors suitable for my room and are there any important things i have to look out? I am easily confused between following my birth (metal) element or my kua 9 element (Fire). Please advise. thank you very much for your help