The three app icons on the face are orange. Theatre mode is off. How can I restore the normal colors?

Some watch faces allow you to change the colors of complications (the apps around the watch face.) You can edit the watch face on the watch itself by touching and holding the watch face. You should get the option to Edit your watch face. Swiping through the edit options may bring up one that looks like this:

Then, within limits, you can choose the colors of parts of the watch. You can see more details here:

Customize the watch face - Apple Support

You can do the same thing with the Watch app on the paired iPhone. Seems easier there.