Tag color update does not work.

If I send a request with color from a new list:
Request: { color: ‘yellow-orange’ },

Response: color: Must be one of {dark-blue, dark-brown, dark-green, dark-orange, dark-pink, dark-purple, dark-red, dark-teal, dark-warm-gray, light-blue, light-green, light-orange, light-pink, light-purple, light-red, light-teal, light-warm-gray, light-yellow, none}, not: yellow-orange’

If I send a request with color from a old list (dark-blue, dark-brown, dark-green, …), the server responds successfully, but the changes are not displayed in the interface.