I recently obtained some early tube frame attachments to compliment the model 189-01 900 tractor i got last year. I bought a 18449 38" center mount mower, a 18514 32" snow blower, a 18532 42" blade, and a 18610 25" tiller. The attachments are in good condition, having been stored inside. One thing that was peculiar to me was the tiller was painted in the green and yellow scheme that I thought was pre-tubeframe, similar to ride-a-matics. Is this unusual for tubeframe attachments to be painted yellow and green?