Rihanna might not have a ton of love for some of her musical colleagues, but her fans? That's a different story. Looking ultra-colorful in a purple top, orange pants and brilliant red hair, the "Rude Boy" singer was anything but impolite while greeting fans in London on Friday, graciously signing autographs and posing for pics with her admirers. Click through the pics to witness Ri-Ri's bout of fan appreciation. And after that, hit up Paparazzi-Razzi to see more of your favorite famous people being their awesome selves. What do you think of Rihanna's color scheme? Let us know in the comments s...