[webapi]Change ref test in tct-color-css3-tests

Impacted tests(approved):new 0,update 19,delete 0
Unit test platform:[Android]
Unit test result summary:pass 11,fail 8,block 0
Merge pull request #936 from chenxix/chenxi/misc-uiautomation/update-color

[webapi]Change ref test in tct-color-css3-tests