I guess my feeling about it the actual product and the catalog picture are two different items. The Catalog picture shows the the picture of the Ps-4 from the 2003 limited edition set with green pilot and driver wheels. The roof was painted green even in the 2005 catalog that was described as being prototypical.
There was nothing in the new catalog saying the roof was going to be painted.
I will say this if Lionel where to release one more Ps-4 I would hope they visit 1401 in Washington D.C. and release that locomotive as the finial run.