Actually, the green-effect is slightly exaggerated in the PS, but I did that because in certain light from certain angles, the actual Candy Plasma Blue looks like that. From other angles in different light, it has a very slight purple-ish tinge to it. Most of the time it just looks like a gorgeous electric blue. It's very sweet in person. My now gone :/ 2008 ZX-10R was Candy Plasma Blue so I've studied it in great detail, hehe.
It's very expensive because the exclusive maker of the paint for Kawasaki and aftermarket distributor has a monopoly on it (Color Rite), and it's a 3-stage candy paint. It's a good thing I only want half of my car painted with it.
Here's a pic I pulled from google demonstrating that green-effect on a 250R.