Coloured stars in globular clusters?

Another thread about viewing colour.

One of the first globulars I resolved was M3. This was 40 years ago and I used an 8,5-inch Newtonian and 100x magnification. This was really a memorable sight. To me all stars of the cluster appeared golden, and although nearby M13 is brighter and larger the sighting of M3 stands to me as the most memorable experience.
I never appreciated any colour difference between globular cluster members until I made my first observation of M4 with my 12.5-inch. The first impression of this cluster was that it was rather loose and I also noticed a wide double of brightly orange stars. The other cluster members appeared pale yellow to me.
Some time later I observed M22. In this cluster I noticed that several (20 - 30?) of the brighter stars were clearly orange and contrasting with the other stars. I also got a strange impression that these stars were located slightly in front of the cluster. This was definitely an illusion. It is easy to get a feeling that the stars of a globular are so densely packed that they would block out the light from stars inside. This is not true, of course, but can give the observing the feeling that the bright K-type stars are located in the front. To me this impression is most obvious in M22, but I also see some of it im M13 and M3.

The much brigher and larger Omega Centauri gives a different impression. I can't recollect seeing any colour there.

Do anyone else see coloured stars in the globulars?

Inge S

I've never noticed star colors in globulars but haven't really looked for it.

Often when I watch a well-resolved globular drift across the field from right to left, I have the impression that the entire cluster is rotating. The direction of rotation also seems to be right to left. This is obviously nonsense but it's an interesting visual illusion. The illusion could be caused by field curvature but I doubt that there is enough to cause it.

I see colors in stars in clusters, globulars well sometimes it seems so, but I do wonder if they could be foreground stars or not. But the overall color of a globular does seem to have a shade of color.