Fixed typo
Merge pull request #624 from cabanier/master

Fixed typo in text that describes expected color
Add reference file for color t32 and color t422 case

Modify 8 test cases and add 7 reference files.
Merge pull request #592 from chenxix/chenxix/csswg-test/color-t32-t422

Add reference file for color t32 and color t422 case