I remember listening to a song by Peter Paul & Mary ???with lyrics like " the greenest green are the grass on which you lay and the bluest blue are your eyes" ??!! etc. Also "reddest red" were mentioned.

The lyrics were probably trivial but I have a specific memory attached to that song and would like to hear it again

The song came of a single or an EP. Maybe it wasn't PP&M ?. Anyway, I cant find it anywhere. Can somebody help !!