#1: Extract Color class from here
 #2: Add tests and basic compare specs

Write tests with code coverage about 80%
 #2: Test compare and absract method (coverage become 100%)

Write tests with code coverage about 80%
Merge branch 'feature/2-write-tests-with-code-coverage-about-80-' into develop
Bump version
Merge branch 'release/0.2.0' into develop