Few
Set your phone screen to greyscale and maximum night light.
After a couple weeks, go back to default, and feel your eyes bleed.
I really hope nostr:nprofile1qqswhhhf99z77pfg80s2c00z27rusxn2tzss7450n34krkwa2yadhtgpp4mhxue69uhkummn9ekx7mqpz3mhxue69uhkummnw3ezuerkv36zuer9wcq3vamnwvaz7tmpw5h8yetvv9ukzcnvv5hx7un8lpntld survives and thrives.
Discussion
When I first heard of daylight, I thought the non-color screen was a deal breaker.
But now I've used my phone almost exclusively in greyscale for months, and its perfect for 99% of screen time. The biggest issue is with colored graphs etc, which you rarely see anyhow.