Just wondered why you wanted to maybe replace the key caps?
I was bought a SteelSeries 6Gv2 for Christmas by one of my son's, and the key legend started to show signs of bad fading in less than a week, (looking with a magnifying glass you could see the black coming through!). After 37 days trying to get a response from SS support, I bought WASD keys from a UK Ebay which seem much better. Cherry keys seem pretty universal, but not sure who makes the key caps for SS.