Forget bold neon or even pastel. This season's yellow nail polish look is a pure, unadulterated take on the bright, cheery hue. Think: NYC taxi cab, buttercup-flower yellow. Seen recently on stars like Leona Lewis (left), Jenna Elfman (upper right) and Jessica Szohr (lower right), the warm-coloUred polish is a great accent to Summer's breezy wardrobe choices. To add a little flair, take a note from Jessica, who opted to pair her two-tone polish look with an orange hue. There's nothing mellow about yellow. Try: Darling Rubber Duckie ($18.95) or Zoya Creamy ($19).