The flaw here is the custom of the community making group buy decisions based on renders only. Fool me once, shame on you. Fool me like 35 times, it's probably my fault by now. Real color samples should already be in hand when the GB starts.
I bought it because RAL color is provided. It match with render just fine. The problem is, the keycap samples were never reveal on GH thread....
Therefore no one could possibly correct it before production start.
Keep in mind that a digital RAL color provided on screen (like the designer did in their GB post) isn't necessarily at all accurate. RAL and Pantone swatches can look very different in person, and a designer should be matching their renders to the physical swatch, not the digital representation of the color swatch.
My monitor is fully calibrated for design work. I know what I am looking at....
Also, those color chips should match close enough without too far off from samples.
I have bought at least 30 different sets of GMK, and this is one of the only sets I have received with such issue. (Aside from Mizu, but that turns out better than render)
For those who are disappointed with this set, GMK Dandy with alternative base set is closer to the color chips provided than this set. It's an option for those who still looking for similar color scheme.