First check your black parts for the blue tint without the laquer. It is very common for black pigments to have a blue cast or a red cast or a green cast or a....well, you get the picture. Also check your clear on other colors --particularly white--although it is common for white to have a blue cast or a yellow cast as well.
Odds are very good that whatever is causing it will not gas off. If it is in the clear, then leveling and buffing will help, just a little because it will only be because you are reducing the thickness of the coat therefore removing a little of the blue along with it.
On the bright side, guitars spend most of their time indoors under artificial light, so odds are you will not see it too often.
SR