Bright red leaf like thing with see through body?

[zaba859]

Just found this on my live rock. It apears fluorescent red when tank lights are on but when taking picture with flash light then its orange. It seems to have coloured edges but transparent in centre. Looks like leaves and grows in pairs in places (pics attached). It wasnt there yesterday. It basicly looks nice as but iam concerned it may be unvanted guest. Please help!

 

[VKP01]

Hard to tell from pictures, but looks like maybe some dragons breath macro algae?