Do you use DeCONZ or ZigBee2MQTT?
I’m asking because I created an app available in HACS for DeCONZ that allows smooth dimming with long press/release of a button and more and I could probably easily extend this app to include the color changing. Currently it says that it’s only for the Hue Dimmer switch, but adding other remotes is relatively easy (doing this right now for two other remotes and will merge it to the app once I get positive feedback from the testers)
Some other guy created an app available in HACS for ZigBee2MQTT, which I think supports the color change already.
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