They look like little squares with a letter inside, reminiscent of the Adobe icons on your computer.
For example, the icon for Arrow is a square with a stylized A, the cross section of which looks like a little bow. Clever, huh?
That's all well and good until we get to the icon for The Vampire Diaries. Yow... that... that's not good. That's not good at all. Those two letters should never be placed together, especially in a TV promo.
And the way the V is dripping. I know it's supposed to be blood, but with those two letters and the white color... it just looks like some sort of unpleasant discharge.
Hey, The CW. You use a lightning bolt in the icon for The Flash. How about for the Vampire diaries you use one with pointy teeth? Or a bat? Something, anything, besides VD.