Hi Rocket Pixels,
I'm not the developer of this plugin, just an experienced PHP developer lending a hand now and again.
So, while I believe you are making a very good point, this is a design decision which is definitely not up to me to make.
I would suggest you open an issue at the GitHub repo and make your case for changing the 'dots' design to something more colour-blind friendly and/or adding an option for people to choose between two different designs - the current and a colour-blind friendly one -.
In the mean time, if you feel comfortable with that, you could apply the changes I made to the plugin for your friend so she will not have to wait for the next release - you can see the changes in detail in the pull request - or, if you're not comfortable touching code yourself, I could send you the changed file, all you'd need to do is upload that one file over the current one via FTP.