Engine ID by color!

OK, I have a weird one here. Has anyone seen a yellow small block seemingly original? I have found an engine in a truck that is advertised as a 313 (poly). It is not as the picture shows. It is an LA engine in place where a poly should have been. It was very tough to determine the intake numbers but after searching for hours I have determined them to be 3830945. This could be a 1978 318 4bbl or 75-78 360 4bbl according to many lists I've found. OK, whats the deal you ask? The engine is interesting as it has chrome aftermarket valve covers on it. These were available on Lil red expresses, but I think those had wire tabs on them. Then the engine is yellow. Ok, anybody could have painted it, but after searching the casting number I come up with a thread, on FABO, that has the same intake.....and it is yellow as well. So, I am considering going to look at this truck, a couple hours away, to see if this could be an E58 engine or something similar, but the color has me wondering. Both painted yellow by chance? Very well could be. Industrial? But with chrome covers put on?
This is a link to the thread that I found the intake of the same color and a pic of the engine in question. Has anybody ever seen a yellow engine? Perhaps in a combine or on a water pump even.

[WANTED] - 360 Intake Manifold #3830945

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