As Revell paints are not available for sale in North America, we can't suggest a US firm as they can not obtain the paints. What most US modelers do is use a suitable substitute from the paints that are available in the US such as Testor's, etc. To assist you in finding a suitable substitute color, we have found some websites that have cross-reference charts for Revell paint colors. We have listed some of those below:

Scan down the Revell column for the color number...

www.fortunecity.com/meltingpot/portland/971/reference/humbrol.htm