By Piya Sinha-Roy LOS ANGELES (Reuters) – Floral-hued gowns dotted the red carpet at the Primetime Emmy awards on Sunday, mirroring the blue and pink palettes that graced runways this season. Deep blue tones stood out against the red carpet and actresses favored feminine silhouettes at the Emmys, the first in Hollywood's six-month-long awards season. "30 Rock" nominee Tina Fey led the pack of ladies opting for cobalt blue in a custom Narciso Rodriguez low v-neck gown. …