Revert "Issue #2125621 by anandps, mgifford, davidhernandez, jessebeach,...
Revert "Issue #2125621 by anandps, mgifford, davidhernandez, jessebeach, mparker17: Fixed drupala11y.org finds two new color contrast issues."
Needs more discussion/review, given strong visual impact.
This reverts commit cdf25d79.