Not sure you are giving enough information here…
What you list as error, is actually just a prediction of OH2; what is missing in your description are details to your set-up (How to ask a good question / Help Us Help You) and equally importantly the real-life behavior of your bulb…what is actually happening? Does it change color? Does it go out? Others? Did you try other commands, e.g., does it work if you rule is switching the bulb on and off rather than try to change color? RGB lights can be tricky, did you check the docs and try to use any encoding other than HSB?
