I too almost bought a yellow leather until I read the unnatural coloring label. They wanted more for it than the reg. ones that were going to stay healthy
your second picture may not be as bright but it looks okay.
I bought a yellow Tonga...it is not as pretty a yellow but at least it is not going to die from whatever was used to make yours so bright for a short time.
There is so much blue in the tank I wanted some bright yellow.
That is a cool big brown "mushroom"???