YouTube alert! The Hue light you select will turn red when the channel you choose published a video.
If
New public video from subscriptions
This Trigger fires every time a specific user you are subscribed to makes a new video public.
Then
Change color
This Action will change the color of your hue lights. NOTE: Accepts color names and CSS hex color values. Defaults to white if no color match is found. NOTE: not compatible with hue lux bulbs.
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Explore more great ways to automate YouTube and Philips Hue