What the hell is that for?

Hi there!
Today I finished my first Final at Cisco Academy with score: 81,5%. For me it's VERY GOOD. Now we started working with brand new Cisco routers... and I don't understand a sh** of what other guys in my team are doing. At last everything is working fine, my router is configured well and I am proud of myself. Still getting better.
After school I am working at some building (building, right?) company. Everything to earn money for bicycle... and vacations! Yup, It's just two months left for party to begin.
At weekend I am going to my friend to get the other bicycle frame. Still don't know how to paint it. Maybe some suggestions?