Colour Validation for RGB and RGBa

[darrynten]

No description provided.

[codecov]

Codecov Report

Merging #18 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##             master    #18   +/-   ##
=======================================
  Coverage       100%   100%           
- Complexity      195    197    +2     
=======================================
  Files            24     24           
  Lines           517    521    +4     
=======================================
+ Hits            517    521    +4

Impacted Files	Coverage Δ	Complexity Δ
src/Validators/ColourValidator.php	100% <100%> (ø)	10 <0> (+2)	⬆️

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