no color after apple watch iOS update? Only black and white and shades of gray.

I've already told you how to do it on the phone and the watch,if you don't have the accessibility feature on your phone or watch then you have some other problem.

What is it exactly that you don't understand?.

Contact Apple support here;

Get Support

On iPhone:

1. Open Apple Watch App
2. Tap Accessibility
3. Turn off Grayscale

Tap on accessibility in the watch app and turn off grayscale.

On the watch tap on settings,then tap on accessibility and tap on greyscale to turn it off.