This is Thalassa montezumae (no English name), and it really is this color! It’s native to Mexico and the U.S. southwest, and has recently turned up in Florida too.
Mixed media: Faber-Castell Aquarelle pencils, Prismacolor pencils, and Photoshop.
I drew the beetle in Aquarelle, then went over it with a wet paintbrush to get the smooth, blended watercolor effect. After it dried, I used Prismacolor Verithin pencils for the fine details. Then I scanned it into Photoshop and added the background, a texture by rubyblossom on Flickr: www.flickr.com/photos/rubyblossom/3255785648/