Victoria Beckham is the queen of understated glam ensembles, so it’s not every day that we see her sport a color other than black. MORE: Victoria Beckham confesses her favorite snack is 'boring'But, when she does, the look is always a showstopper. WATCH: Victoria Beckham stuns in slinky backless dressSuch was the case again when the fashion mogul shared a photo of herself on Instagram that showed her wearing a stunning backless emerald green silk dress as she leaned against a gorgeous marble