Not exactly a unique effect but a very unique concept regarding how the effect moves when you move. Pretty cool

I'm confused, is it four differently coloured clouds and a sun in one? (as in the 2nd picture)
Or just one colour at a time? (as in the 3rd picture)

If it's several colours at once, personally I feel it's rather overcrowded, like it's trying to be Frostbite + every colourful cloud effect at once. And mixing dark violet and dark muddy green and slate-blue and reddish-black (from Knifestorm?) and raspberry-purple becomes a mess.

Great job on the effect!