RTGM Calculator App - adjusting the color scheme for iterative RTGM calculation plots

If possible, can we use a custom, perceptually uniform/colorblind-friendly color scheme for these plots? I'm proposing a green-to-blue color scale that progresses from lighter to darker as we converge to the final iteration:

https://colorbrewer2.org/#type=sequential&scheme=GnBu&n=5.

@bclayton let me know if this is feasible and what I can do to help.