The CWA will assign one color to citizens who add proof that they received a vaccine within the last three months and a different color to citizens who add proof of vaccination that’s more than three months old. Only those with the color showing that they’re “freshly vaccinated” (have received a vaccine within the last three months) will be exempt from Germany’s mask requirement in public indoor spaces.

China’s system assigns a green, yellow, or red code to citizens. Those with a green code are allowed to move freely, those with a yellow code may be asked to stay home for seven days, and those with a red code have to quarantine for two weeks.

https://www.lifesitenews.com/news/germany-announces-color-coded-vaccine-passport-system-similar-to-communist-chinas/