From what I've seen, the column color in 1970 depended on the type of cluster you had. A Rallye gauge car would get the same color as the interiors. It has nothing to do with the body color and only to do with the interior color.

Back in 1970 you could walk in to your Plymouth dealer and order a FE5 Red Cuda with black, white, black & white, tan, or red interior. If you ordered a Rallye Guage cluster you would then also get a colored matched steering column and dash. White, black, and black / white interiors would get a black column, tan gets tan column and red interiors would get a red column.

You can see all the interior color options here in the 1970 Plymouth Data book (last 2 pages):

http://www.e-bodies.org/Resources/Data_S...k_Barracuda.pdf