Yep...but some might not be too happy about it.
One thing to think about, is that when snakes are in blue they sometimes can't see as well, which makes them feel more vulnerable. At least that is my thought, and I've seen some snakes be a lot more skittish when in blue. Plus, it seems like they might be a tad bit uncomfortable. My ghost just shed and she was actually more flighty (and slippery) afterwards, silly snakeyshorts.
Mine's in blue for the first time since I got him. Normally when I pick him up he wriggles a bit and then calmes down. I picked him up yesterday and he was very very wriggly and didn't calm down like he normally does, so I have left him be until he sheds.