I've seen air get trapped seeminly in the calipers, and forcing them apart helps get rid of it, but mostly on KTM's.
as long as everything seems tight, no leaks and doesn't fade, you've got nothing to worry about.
I usually just use a screwdriver to pry em apart on my bikes, never hurts a thing...next time you get to that point, might want to grease up the pins a bit, after time they get dirty, rusty etc, and a bit of grease ensures the pads move freely on them.