They look exactly like the color my Hawaiian Sticky Punch Palys have turned. The "hinges" don't always show up in the pictures, and the colors can be deceiving. They will change colors to suit changes in environment. Sticky Punch is a species that is easy to keep, and will adapt readily.
I have only seen my Toby try to eat them once, and I thought he was going to die from it. He swam around like he was drunk for almost 10 minutes. If you look at some of the pictures if HSP on the link you will see that some of the pics look just like yours.