the pair is in the end of the tank with a 20K light, so the blue really reflects off of the white. however, they do keep a blue tint, especially on their tail and fins even in the 10K light at the other end.
I just noticed at least one of your PJ's has 3 lines on the side of it's face? Mine does not, do all of yours have this?
Also Karin I just added a Blue Spot to my 300 and placed him on the right side where I have an awesome shell/sand area with a start of a tunnel and instead he moved all the way to the other side under a bunch of tonga branch? I guess jawfish are like women you can never make them happy? "Just Joking".