As the theme of this blog can include chemistry here are some blue structures that came up in my reading at work today. Prussian blue, with the idealized formula Fe7(CN)18.
(Come on Marvin, some real structures!). Next one is methylene blue:
Hmmm this is taking longer than expected so I'm going to stop there. I'm on a 10.1" Asus Eee PC, with no mouse, a touchpad that works most of the time, an old version of ChemDraw, a left hand button that works some of the time...and a hot girl on the couch beside me ;-)
PS For some really funky blues why not try polyfluorenes!