This set... is basically exactly what i want to see, except with like... a very dark, hot-pink/magenta. Like the darkest, most saturated "(hot)pink," before it becomes red.
the dark grey is awesome. The orange is "kinda okay."
Would love to see this set done in different versions, w/ the same grey, but a different secondary color (instead of orange; not that there's anything "wrong" with orange).
Like... "lime" green, "hot" (dark) pink, "indigo" (on the more purple side)... maybe even a "teal" or "cyan" version.
Maybe make a set of black modifiers, w/ matching legend colors, to barely-contrast the dark grey.
"Just sayin'."