Most fish will change color with the stress of coming home, then return. Sometimes different lights will affect colors too. Luckily, most of my stuff looks better in my tank than the lfs. Reguardless, wrasses are my favorites and yours is a beauty!
speaking of deals, my lfs is having a sale on live figi, 2.99/lbs. i stocked up for my 55 to be set up, have about 30 lbs. in a 30g rite now and purchesed 40 lbs. sitting in an old 20 gal with a bubble rock and flow.