See full description here https://cv.nmhealth.org/public-health-orders-and-executive-orders/red-to-green/
The county-by-county framework will permit counties – and the businesses and nonprofit entities within their borders – to operate under less restrictive public health measures when health metrics demonstrating the extent of the virus’ spread and test positivity within those counties are met.
In order to prevent and mitigate the effects of the spread of the virus, and to ameliorate the unsustainable resultant strain placed upon the state’s health care system and personnel, counties where the virus is more prevalent will operate under more restrictive public health measures. Likewise, counties where the virus has been or is being suppressed will operate under less restrictive measures. Counties will operate under one of four levels: Red, signifying very high risk; Yellow, signifying high risk; Green, signifying medium risk, and Turquoise, signifying low risk.