File talk:COVID vaccine passports by state.svg

Colours and NPOV
Since the subject of passports is sensitive, I recommend that the colour choice be as neutral as possible. For example: The latter three colours shouldn't be too bright, but the colour should be clearly distinguishable. --LABcrabs (talk) 00:23, 2 October 2021 (UTC)
 * White/Grey: not applicable
 * Dark Grey: banned
 * Yellow: partial use
 * Magenta: app from cities
 * Blue: app from state