Glow like skin shading

how do you achieve the following shading?

http://www.blender3d.org/cms/September_2004.474.0.html

and the pic is called weird purple bird

…Play around with the “RAMP” feature in your shader (F5) menu
and you shall have a lot of fun…

…try adding some colors…

…try pushing the “alpha” value around…

EDIT

Oh and…for the record, a question like this …without any finished
image to present…would go to the “BLENDER GENERAL” forum

and NOT here…