If the change is not for me then why is my client changed? Most competent MMOs include colorblind-friendly options as options. It's not a hard concept to grasp.
Furthermore, randomy frenetic distractions are bad for gameplay. They may as well try strobing an entire fricken rainbow.
That aside, the #1 problem with the change has nothing to do with colorblind people at all, and should be adjusted. Short of fixing the issue, they should disable the change or make it a toggle / option.
That goes for ready check spam as well. JFC.