1x1 Bricks in Very Light Bluish Grey?

[Takanuinuva]

I got 60150 Pizza Van for christmas and the 1x1 bricks are not the same light bluish gray as the other gray bricks

They are lighter in color. 

Is this a common error in this set or did I get some rare misprint?

I can provide a picture if needed.

[1963maniac]

Those parts according to Bricklink are supposed to be LBG not very light bluish gray. What do they look like?

[Lyichir]

The color that Bricklink calls "Very Light Bluish Gray" has been discontinued since when Mindstorms NXT retired. It's also pretty unmistakeable—almost more of an off-white than a grey due to how light it is.

Your situation is more likely to be run of the mill discoloration.