I think it's a good image, and pleasing to see all the detail revealed in a subject which is not often imaged at this FL.
Colours? Hey, they are whatever you want them to be in NB depending on one's intention and objective - same goes magenta stars, love 'em or hate 'em it's dealers choice.
For some it's the science, for others the aesthetics - both schools of thought are valid imo, a bit like comparing Oxford & Cambridge!
That being said the S2 yellow appears a tad saturated on my monitor, and the image clearly shows the three bandwidths present.
The dark whispy bits in the O3 region are also revealed in all their glory.
I havn't seen them as clearly before.
Great stuff
