Great shot of a beautiful globular cluster Steven. This one is actually the 3rd brightest in the sky, and very neglected, so it's nice to see an image of it every now and then.
Star colours in the field look really good and I do love the distinct white appearance of the cluster which makes it very intense and really conveys the crowded environment.
However, technically this and other globulars are all very red apart from a light sprinkle of Blue Straggler stars.