Replace color with one from the WikimediaUI color palette
Replace color with one from the WikimediaUI color palette

It also increase contrast so minimum readability contrast is
ensured.

Change-Id: Iba1b4dee2028b9451044d2407eec60be71a48a3a

wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer