Posting this here because you lot are responsive and maybe have dealt with this.
I'm relatively new to Hue.
I have an RGB strip in my daughter's room.
I've used the All4Hue app to enable a color loop on it as she likes to see the rainbow effect.
The problem is... I can't stop the rainbow...
I've obviously "toggled color loop off" which is the option in the app to stop it.
I've tried to manually set a color and turn it off in the Hue app.
I've cycled power the RGBW controller.
I've cycled power to the Hue Hub.
I'd really love a way to see what apps have access to my devices and revoke it but I've only seen one page from hue that explains that and the link that they recommend visiting doesn't work any more apparently.
Nothing to delete automations in that app? Some apps have their own clean up. iConnect Hue does and has a separate option for removing animations. Not sure if it's specific to iConnect Hue or if it will work with other integrations. That's free functionality in that app. Might be worth a try. Very nice app too, so worth the download.
If you want to get really nerdy, go to https://developers.meethue.com/ and create an account. Then you will get access to the API, you can send commands to the bridge using the clip API debugger via a browser to see what is on there and clean it up.
Actually, you might be able to do that with a Hue recipe (Hue App > Explore > Hue Labs). I think it's part of Living Scenes. I was doing for Halloween last year with my 4 Blooms. They would flicker and rotate Halloween colors every 30 seconds. It was a cool effect.