Unfortunately, I am unable to post photos right now. Red Balloon is a lot deeper than GK. Good Kisser is a lot brighter, pinker. They are quite different lipsticks actually. Here is a good comparison swatch of Pleasure Bomb and GK. I would say that even though this isn't Red Balloon, you get a good idea of the difference as Red Balloon is very similar in deepness to Pleasure Bomb.
http://instagram.com/p/rww12lSiHz/ (credit to user). HTH I must add that the Matte finish of this lipstick is a HUGE selling point. I wore mine out the other day and my lipstick looked good for probably 8 or more hours!