Due to the 5x2 thing, there are some ideas you can do. You can have all 6 anyway, having the mori or do on a seperate row.
Or you can remove one. I can say, you can remove the u and no as those two are the ones with the most distinct colours. Actually the no in the house set is a particle that means possession of something so it can be animal's forest as the meaning.
I can kind of think of this, as an alternative, use the colours of each house to your advantage like what I did from a gradient light blue to green. I can think of a few more ideas like
-teal, cyan, dark blue
-pink, yellow, green
Or, if you want symmetry, you can have 2 houses on each side with something in the middle like
-light blue, dark blue, random collectible, teal, green