1 Use descendant invalidation set for :disabled pseudo class.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS getComputedStyle(button, '').backgroundColor is transparent
7 PASS internals.updateStyleAndReturnAffectedElementCount() is 1
8 PASS getComputedStyle(button, '').backgroundColor is green
9 PASS successfullyParsed is true