Hou to add transition length when the color changes?

[kvvoff]

I use light bulbs E27, E14 and a led controller GL-C-008 from Gledopto.
When I turn on the light - the transition length is present and the light turns on smoothly.
When I turn off the light - it also turns off smoothly.
But when I change colors or change the temperature with the lights on, everything happens at lightning speed and is unpleasant for the eyes.
How to fix it?
How to make the transition length work not only when turned on and off, but also when the color changes?

[Koenkk]

Duplicate of Koenkk/zigbee-herdsman-converters#551