Issue #3277274 by richardrobinson, saki007ster, ApocalypticJake, bnjmnm, sjothivelu@valleywater.org, mcolebank, joshmiller, markie, mradcliffe, pilot3, W01F: Dialog css references nonexistient --color-whitesmoke css variable (cherry picked from commit 73b7efeb)
mentioned in commit 5768dc00
