This section gives you step by step instructions on how to enable Colour Filters in watchOS 10, with pictures of the screens to help.
1. Press the Digital Crown on your Apple Watch. If your apps are displayed as icons, tap the Settings icon . If your apps are displayed in a list, scroll down and tap Settings.
2. On the Settings screen, scroll down and tap Accessibility.
3. On the Accessibility screen, scroll down and tap Colour Filters.
4. On the next page, tap the toggle switch for Colour Filters to turn it on.
5. Greyscale is the default colour filter. To use one of the other filters, tap it in the list.
6. Scroll down to the Intensity section at the bottom of the page. Use the + (plus) and – (minus) buttons to adjust the strength of the filter. Note: This option is not available for the Greyscale filter.
7. When you are happy with your settings, you can return to the clock face by pressing the Digital Crown.