In the past I always wanted Penumbra-like unique modifiers for GMK keycaps, but if you are not a Windows-fan, it's almost impossible for such a dream to come true - especially for non-standard layouts
I just checked the Sky Dolch II keycaps to see whether any ideas spark up, for personal usage
It seems to me that there are 2 different products, One Sky Dolch + CMY (soft colors) - and second, the RGBYO modifiers (strong colors) - which could be nice for Windows GMK Dolch users to buy as an add-on
I'm wondering how the buyers intend to mix and match the keycaps, would love to see keyboard-layout-editor sketches if anyone has any