This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 1 duplicate test name: "No hashless color quirk for background-color property with invalid hashless value"
PASS StyleSheet present 
PASS All rules parsed 
PASS Hashless color quirk for color property 
PASS Hashless color quirk for background-color property 
PASS Hashless color quirk for border-color short-hand 
PASS Hashless color quirk for border-bottom-color property 
PASS Hashless color quirk for border-left-color property 
PASS Hashless color quirk for border-right-color property 
PASS Hashless color quirk for border-top-color property 
PASS No hashless color quirk for background short-hand 
PASS No hashless color quirk for text-shadow color 
PASS No hashless color quirk for box-shadow color 
PASS No hashless color quirk for linear-gradient colors 
PASS No hashless color quirk for -webkit-border-start-color property 
PASS No hashless color quirk for -webkit-border-end-color property 
PASS No hashless color quirk for -webkit-border-before-property 
PASS No hashless color quirk for -webkit-border-after-color property 
PASS No hashless color quirk for -webkit-column-rule-color property 
PASS No hashless color quirk for -webkit-text-emphasis-color property 
PASS No hashless color quirk for -webkit-text-fill-color property 
PASS No hashless color quirk for -webkit-text-stroke-color property 
PASS No hashless color quirk for fill property 
PASS No hashless color quirk for stroke property 
PASS No hashless color quirk for stop-color property 
PASS No hashless color quirk for flood-color property 
PASS No hashless color quirk for lighting-color property 
PASS No hashless color quirk for border-top shorthand 
PASS No hashless color quirk for border-left shorthand 
PASS No hashless color quirk for border-right shorthand 
PASS No hashless color quirk for border-bottom shorthand 
PASS No hashless color quirk for border shorthand 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS 4 digits: 1010 is a valid <quirky-color> 
PASS 8 digits: 00101010 is a valid <quirky-color> 
PASS No hashless color quirk for border-color property with 4 digit hex value 
PASS No hashless color quirk for border-color property with 8 digit hex value 
PASS 3 digit hex: f0f should be accepted in quirks-mode 
PASS 6 digit hex: ff00ff should be accepted in quirks-mode 
PASS 4 digit hex: F0F0 must be ignored in quirks-mode 
PASS 8 digit hex: FF00FF00 must be ignored in quirks-mode 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
PASS No hashless color quirk for background-color property with invalid hashless value 
Harness: the test ran to completion.