There's no doubt that (Faded) Whale Blue is an absolute classic PRS color. But ~35 years down the road (today), I'm kind of thinking that Blue Matteo and/or River Blue have taken PRS's blue-game to the next level.
But I'd also have to argue that the following colors are just "right":
Vintage Yellow on a Custom 24
McCarty Sunburst on a McCarty or DGT
Black-Gold Wrap Burst on a Paul's Guitar
Faded whale blue followed closely by Red fire burst