So, I’ve seen this post by @andrepia. I’m not really sure if that’s what I need. Cause what I’d like is to just show the same colour set in all the lights (Yeelights) shown in Homekit.
Right now, I’ve copy-pasted Andrepia’s code snippet into my configuration, and indeed I’ve got
But for example, I’d like to have only one option of white, yellow and maybe a few colours just to fill out the spaces.
I don’t get completely how the Homekit integration works and it has a lot of configuration options, maybe anyone has an idea? 
thanks!