Using my phone in grayscale convinced me of the power of shiny colours. It is shocking how boring my phone feels in grayscale.
This really does help break any feeling of attachment to the device and the solutions in this post really do make it more practical. It does kind of suck using the camera in grayscale.
This is fantastic! I had greyscale on many years ago, but I had to turn turn colours back on for google maps... but this trick allows me to have my cake and eat it too!
I’ve been doing exactly this (with the shortcuts) for almost 3 years now. I don’t think it’s as powerful as I would like but it’s certainly helped. I do wish more apps worked in grayscale (calendar I’m looking at you) but that’s on my long list of grievances.
I've bound toggling greyscale on/off to pressing the lock-button 3 times, makes it very easy to switch back/forth when you need it, but still be able to leave it greyscale most of the time.
I don't know of any way to control the setting automatically (sometimes there are special-permission non-standard/undocumented intents for settings though), but as a maybe-close-enough you can turn on grayscale color correction (in accessibility -> color & motion, in my phone) and add a quick-settings tile to toggle it.
I'm on a Pixel 10 for these instructions, not sure if other manufacturers offer the same options.
Modes is an available option in the tile list. You can go to Modes, create a custom mode, and under display options you can set greyscale. You can also set modes to turn on automatically based on calendar events or a schedule. Notification tweaks are also available in the same area.
You can also use one of the accessibility shortcuts to trigger it quickly (both volume buttons held, triple tap, two fingers from bottom) if so configured
I want my phone to be greyscale (low-dopamine), but some apps need color. Here's my workaround that works for me (triple-pressing the side button didn't, I forget to turn greyscale back on.)
Removes a lot of purposefully rewarding/manipulating haptics. Makes a phone feel "quiet" and easier to put down.