Gwen Stefani is launching her own cosmetics line. GXVE debuts March 3 on www.gxve.com and at Sephora on March 7. Products in the collection (pronounced “give”) are priced between $21 and $48. There's four shades of eye shadow; pencil eyeliner in black and blue; two brow pencils; a skin care oil primer, and, obviously, lipstick. The Grammy Award winner has always worn bold red lip color. GXVE's version is a bright red lipstick in matte and satin, and a longwear matte liquid....