My color bulb 2 is changing color on its own

Hello, I have 3 yeelight 2 color bulbs. One of them recently began changing to a light purple color on its own. I’ve tried resetting it, made sure the firmware is up to date. Unplugged it, etc. It won’t stop doing it. Even when using the color wheel it seems to have changed orange to light purple. Sometimes I can get the proper color and it will stay for awhile, then it goes back to light purple again. Does anyone have a suggestion for me to try? Thanks for any help.