opi is one of the world's leading manufacturers.id a visit to their lab in hollywood. >> i always say it's the greatest accessory, most affordable. you can change it as often as you like. and get a whole new look. >> reporter: looks that include crazy colors with names like overexposed in south beach, trophy wife, houston we have a purple or for you ladies waiting for your prince, no more waity katie. while sales of lipstick dropped by over 5% in 2009, polish grew by nearly 15%. from designer brands to makeup giants, everyone wants a piece of that $173 million lacquer pie. >> we really took nail polish to being something aspirational. >> reporter: they've created 1,500 shades over the past 20 years. what is the all-time number one selling shade. >> i'm not really a waitress from our hollywood collection. and in hollywood everybody says, i'm not really a waitress. it's about ten years ago that we launched this color and still number one. >> reporter: serena williams, who is actually studying to be a manicurist created a grand slam co