Blue Jay is a Dye Marking that was released on July 20th, 2011. It is, as the name implies, meant to resemble the markings of a blue jay bird. You can add this marking to your waja by use of a Dye Blue Jay.
All examples feature wajas with the marking in FF0000 (pure red). However, this marking can come in any Hex Color as well as rainbow (simply put the word "RAINBOW" in the hex field) and chrome (simply put the word "chrome" in the hex field).