GitLab

The secondary thick text color for dark theme points to the wrong
color definition.

Change-Id: I6256b1e9a965656a26f415abfa197f4e654d86db
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622755Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Tomasz Wiszkowski <ender@google.com>
Cr-Commit-Position: refs/heads/master@{#842311}