awww that's sad... My school has also a similar house system like house. I was in the green colour one when I was Secondary 3 and 4, while being at the blue colour one when I was Secondary 1 and 2. (i forgotten the names already)
I just went back to school last now (more like sneaking in), and stayed till 10 plus to help out for some Secondary 1 orientation camp. (grrrr those student leaders were in charge in them, my enemies) They even ordered me to do all their work, which I just do it, FOR THE SCHOOL. They asked me to distribute food, and carry some chairs and tables in and out the class into the field (gosh they were heavy for a skinny guy like me) Of course, i wore my uniform, and all my teachers immediately reconised me, and of course, me being a funny guy in school had to entertain the teachers as well as greeting them of course. I also took part in the night walk, which involved me scaring people. (i got slapped :C)