Ok first things first, choose a color combo. I dont suggest red or blue seeing as those are common in FRC, or combos from well known teams (ex. you choose tye dye, people may run up to you thinking your Wild Stang) I think that you should check out color scheme designer
http://colorschemedesigner.com/ A mascot, logo or motif will also help you define your team.
Now you should take a picture of the robot, all bare steel and put it in to Photoshop or another photo editor and begin to experiment with your colors. When you choose your paint job practice on scrap before you begin on your robot (practice twice paint once) If you have an artistically inclined person on your team you can manage masking, airbrushing and details.
Look in to poly carb shielding, it can protect your robot's innards and can be printed by sign shops.
Also, LED's. they use virtually no power and are +20 swag to your robot.