Jim, Brian is right. Revell Germany has this colour in its range as No. 42 Gelboliv. The German Bundeswehr used Gelboliv from 1955 to the early 1980's when the 3-tone standard camo was applied. If you can't get this paint in the US, try to look for the colour code RAL 6014, that's the correct one.
Here is my recently finished Kanonenjagdpanzer (KanJPz), painted with that Revell 42 but with some grey and green pastel chalk in the end.

.... and this is what the paint looks like from the tin ....

Have fun!
Torsten