The very rare "Golden Tortoise Beetle" can change its colour and even its reflectivity, they can change colour looking initially like tiny jewels or golden.
The tiny insects are able to change colour from gold to a red with black spots rather like a ladybird, they can also alter the reflectivity of the outer cuticle so that it becomes clear.
This colour change is accomplished by microscopic valves controlling the moisture levels under the shell.
It is some times known as the "Harry Potter Beetle" because when it flies it looks like a "Quidditch"
This was a very rare find for me and I can say one of the best I have ever photographed.
It was shot on some bushes when walking along a walkway next to a beach in Hong Kong.