XF 1.4 Disable CustomText Colors In Posts

Is it possible to disable users from using custom text colors in posts? Or is there an addon made to at least prevent users from using this to change the color of their entire posts? (i.e. If you use it for a few words here and there for highlighting a point, it's ok, but if you just change the color of your entire post it flags you?)

Something like this would be helpful, or a way to disable it site-wide altogether.

Thanks in advance for any suggestions.