R&B star Chris Brown has paid homage to slain rapper Tupac Shakur by having the lyrics to one of his tracks scrawled on his Lamborghini. The Kiss Kiss singer hired artist Huero for the job and he spent 16 hours handpainting the lyrics to Lord Knows on the star's sportscar. And to make sure Brown didn't upset too many people with his colourful ride, he asked Huero to remove all the expletives and N-words.