These figures on the chart above are for Chrysler to gather information for the next years build. Some colors I believe lost the popularity over time such at TX9.

In 1970 the non RT Challengers in TX9 were in the one perecent. Now make it and RT and the percentage gets to around 4%. Anyone have a theory of why that would be. Is it because the RTs were usually an ordered car by the public, more information would have to be known.

FK5 seemed to be a very popular color across all types of Challengers in 1970. Is it because it was a new color, then disappears for 1971. Lots of other changes in colors were done and you have to wonder why. I can see dropping some options if they were never click off in the sales box but colors seem to have the own reasons.