For Striking Scorpions:
I think (and it's very personal) that the old Scorpion green was waaay to bright as a base color.
Basecoat with Warpstone glow
If you think it's too dark the new Scorpion green is called Moot Green.
Highlights with Elysian Green
Yellow stripes with Averland Sunset first coat.
If you want brighter add Yriel or flash Gitz yellow on top of Averland.
Resulted in something like this:
http://www.dakkadakka.com/dakkaforum/posts/list/499530.page