"Blueing" for shed question

When you all speak of blueing before/when shedding do you actually mean the snake turns a little blue?
I finally put my glasses on and gave "Tigger" my new (2 weeks with me) reverse Okeetee a good hard look all over as now he is pretty calm. I noticed that the area surronding the bright orange markings are surronded by a very pale blue pigment. I thought this was usually white, is this due to near future shed or is that a common marking? Eyes are clear and pink/red.
I know I have probable not described things very well but I think you will know what I mean?
Bill

Where you are most likely to notice the snake is blue is the eyes and the belly. Sorry, I don't have any corn pics. You might notice that brilliant black belly checks become pale and blue. A normal colored corn, like an Okeetee, may look dark or dirty. Amelanistic snakes like yours can start to look pink or sort of a milky sunset color.