Hi, Simon,
Your star colours seem broadly similar to the
ESO wide-field shot. In particular, you've avoided making it too blue which I perceive as a common error with this one in particular and globular clusters in general, given that they are famous for being mostly older, cooler, orange stars. Well done!
Your processing seems to have given more weight to the faint outer halo compared with the ESO image.
Overall, a great shot.
Best,
Mike