I saw the most incredible photograph of a jellyfish by alexander-semenov. The colour transitions in the animal moving from turquoise at the top, through yellows, red tones, to purples back to deep blues just had to be made into a spinning gradient.
www.inspiration-now.com/jellyfish-by-alexander-semenov/
It has taken some time and experimentation to get the colours and transitions to look the way I want them, but this rolag set shows my final blend composition.
The set comprises 16 rolags, each of a slightly different shade in the gradient.