A small update regarding the color matching: The latest sample we received was of the doubleshot translucent pink plastic. This one was done with the actual light pink legend/inside color instead of some bright white color that the previous sample had. Having the correct color on the inside is super important when dealing with translucency, since the inside of the keycap greatly affects the overall color and look as it's visible through the outer layer.
The requested cloudy milkiness of the plastic, in order to create the proper translucent look, was not present in the latest translucent samples. However the samples before did have that and we had asked to proceed with that level of cloudiness/milkiness... We are trying to find the right balance between color and milkiness, as they both affect each other.
Despite the mistakes on GMK's/their color supplier's end, the samples are looking good overall and we're getting very close. Feedback regarding the translucent color has already been submitted. We're expecting new versions of the alpha and mod colors with minor tweaks, as well as a new translucent sample next.