Work with me here lady!!

[Chanlin]

Sometimes it can be fun confounding and confusing ignorant customers all under the guise of being "helpful" and giving "good customer service".

only sometimes?

[Skrae]

I think you may have gotten a crank call...

[StanFlouride]

"No, ma'am, the Blue Book is yellow."

Tres Magritte!

[Dr Fang]

might have been this one..

Ceci n'est pas un livre bleu?

[Hon'ya-chan]

I think you may have gotten a crank call...

We get alot of weirdo calls; strangely enough, most aren't crank calls.

[friendofjimmyk]

There's also the Big Book which is also known as the blue book - for Alcoholics Anonymous. The pages are white.

The Basic Text is also blue - that's the book for Narcotics Anonymous.

I think Cocaine Anonymous book is also blue - but more of a powder blue. No wait. Sorry - I think it could be green. It should be white though - hardy har har.

Seriously though, this call couldn't have been real! If it were - I weep for humanity.

[Chromatix]

In technological circles there are also Big Coloured Books, which are abbreviated according to colour because they are The Bible of their respective field.

In this case, the Blue Book could be about OpenGL.