How to get that perfect burgundy redish hair color??

I WANT RED HAIR THATS NOT TO BRIGHT LIKE NOT VAMPIRE RED BUT NOT TO DARK I WANT BURGUNDY REDISH HAIR BUT I CANT ..I TRY .....I BUY STUFF LIKE LOREAL AND GARNEIR BUT IT KEEPS GETTING DARKER BECAUSE I HAVE DARK HAIR!!!!I WANT HAIR LIKE THAT GIRL FROM RBD I THINK HER NAME IS ROBERTA OR DULCE AT LEAST WHAT THEY TOLD I LOOK AT HER PICTURES AND I LOVE HER HAIR ANY IDEAS HOW TO GET HER HAIR COLOR???ANY TIPS IN WHAT WOULD BE THE BEST COLOR TO USE???THANKS