RGBA is the CSS standard, so the format is updated to align with this.
Also adding some tests that ensures the format accodring to RGBA and
updating the README.md with the changes made.
Tested and I can't poke any holes in it. The int() value of the color will functionally change, which is a bit breaking so I'll toggle a major version for it.
RGBA is the CSS standard, so the format is updated to align with this. Also adding some tests that ensures the format accodring to RGBA and updating the README.md with the changes made.