The longer the better. The color is immaterial. Obviously, your b/f enjoys them. I'm willing to state that most men would love both the appearance of your labia, and also love to play with them, just as your b/f does. I hope you play with them yourself, rubbing them, pulling on them. You are very, very fortunate to have such lovely labia. Make up your mind to be positive about them, love them yourself, and enjoy the love you receive from others.