
just a freaky co-incidence about the colour, then.
Thanks for taking my comment in the right way, not overly serious!

I see the bottom spiral as the body, the top one the head, the sticky out (clearer) bits being rabbity ears (or squirrel tail) and the front paws.
I suppose a surface iridesence c
ould be scraped away, but it is fused to the surface of the glass, so it would involve scraping away the top layer of glass itself. It's not a cold-painted thing.
Many contemporary glassmakers use a spray of stannous chloride on the surface of the hot glass (in a fume cupboard) to create this effect. Different chemicals will produce slightly different colours/finishes.
Stannous chloride produces a very slightly matte rainbow effect.
However, there are some cold-painted surface finishes which would scrape off. This does not tend to be found on any item of quality.