* Add deprecation warning to toHexString
* Correct CSS color string generation and rename method
- Switch to `round` operation for float to 16 bit conversion
* Update comments
* Update method name
* Add CSS Color String generation unit test
* Add CSS color string conversion unit test and format files
* Add CSS color string conversion unit test and format files
* Fix Color unit tests
* Add CSS color string conversion test
* Switch to colorFromBytes function and fix precision error