Investigate using colormath's implementation of color difference

[DanielJette]

Is your feature request related to a problem? Please describe.

This feedback relates to:

• [x] The Kotlin library
• [ ] The Gradle plugin
• [ ] The IntelliJ Platform plugin
• [ ] The sample code
• [ ] The documentation

Describe the solution you'd like

https://ajalt.github.io/colormath/usage/#color-difference