The prettiest blues I never seen in pictures were pugets.
Those I have seen in person have ranged all over the color spectrum.
Roachcrossing.com has his breeder female on display at one of our local reptile shows over the summer- gorgeous gal, very docile, and the little ones he had were brilliant blue.

For other species, the blue concinus Steve has is a real stunner in person, but blue in concinnus is like irridescence- the glow just doesn't show up in pictures.