Z is for...

Zaffre
(Another word for you to google!) 
Pantone books are tools of the trade for me, unfortunately they are expensive and so tend to be used until they fall apart, which means I often don't know about the new colours that Pantone bring out every year, but with thousands to chose from I think I'll cope!
I've reached the end of the alphabet so the next couple of blips will be extras so that I can start a new theme on 1st February.