Engine paint color question

The two pic's are of unchanged engines. The one in my car has been replaced and painted a dark blue and black which is, pretty obviously, wrong as the original color is the lighter shade (peeling paint on valve cover). I was just curious if anyone else has came across this and what they used to correct it. It also comes to mind that the mid 70's 318's and 360's, through the mid 80's, were a similar light blue not the turquoise color as well.
I personally have never seen an orange /6 but, as I said, I am new to the /6 stuff.