Thread:HMcCoy/@comment-24808864-20140831153530/@comment-29331244-20140915040454

http://www.quickanddirtytips.com/education/grammar/why-we-have-both-%E2%80%9Ccolor%E2%80%9D-and-%E2%80%9Ccolour%E2%80%9D

Because you're English speaker not America speaker :1