Well you now have photos of two different cars in this thread that are both the non metallic powder blue. That would indicate to me that its probably a factory color. In mid year 68, that powder blue color became available on Plymouth Furys as "Hawaiian Blue". Looking at this 1969 color chart, it appears that it was available in 69 as well, but I can't tell what Mopars were available with the color. I didn't even think about it being a Mopar color when I painted a bathroom that powder blue (Hawaiian Blue) color, last month. Let me know if you would like me to post pictures of the Hawaiian Blue bathroom.