G'day Danny, there is some colour in Globs, but not a lot of variety.
The seds article mentions RR lyre type variables and these can be seen in an animation of M3 at:
http://cfa-www.harvard.edu/~jhartman/M3_movies.html
takes a little time to load because of the 2 animations however I think it could be worth the look.
Cheers,
Doug