please note this is a very special set. They are DSA keys, spherical, all on the same profile and we can't match some of the keys (iso enter, spacebars, left stem capslock). It's not definitely for everybody. If it was a "standard" set I would agree on adding more color options but it is not, so I would stick with fewer options.
Regarding color, I LOVE blue, but R4 already has blue sphericals and I don't want to overlap. Plus people preferred the cream on brown version in our short polling on both GH and DT, so...