This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 2 duplicate test names: "Testing that background color is red. Media query "all and (color)"", "Testing that updated media query doesn't match and background color is not red. Media query "(monochrome) and (color)""
PASS Testing that background color is red. Media query "all and (color)" 
PASS Testing that updated media query doesn't match and background color is not red. Media query "(monochrome) and (color)" 
PASS Testing that background color is red. Media query "all and (color)" 
PASS Testing that updated media query doesn't match and background color is not red. Media query "(monochrome) and (color)" 
Harness: the test ran to completion.