As others have said, pick your favorite brand of racquet, pick a bag from them that holds the number of racquets you want to carry with you, then pick your favorite color from the choices you have left.
I bought the Prince bag that holds 6-8 racquets and has the American colors on it. I never use it anymore.
I also have a Prince bag that I love - it's for the Hornet racquets - bright red and has a large hornet on it that has the body shape of a tennis ball.
The hornet bag is only supposed to hold 3 racquets but I get 5 rackets and a can of balls in the main compartment. In it's other zippered compartments I also can get: 6 overgrips, scissors, electrical tape (to use with the overgrips), 15 wristbands (don't know why I have so many), socks, hat, sunglasses, lucky Beanie Baby, medicine, ace bandages, bandaids, extra socks, shoestrings, etc. My point is: just because it says it will only hold three racquets doesn't mean that that's all it can hold. I never take my large Prince bag anymore because it became cumbersome and I can fit everything I need in the smaller one.
Good luck with your choice.
Benjamin