If you were to find someone with an original 50 year old soft top in that color, it would probably be faded and/or stained. If you were to find someone with an original, non-faded 50 year old soft top in that color, and they send you pics, then you have to worry about quality of pics, lighting/shade in the pics, settings of the camera, settings of your computer screen (or printer), and the like. This makes one more obstacle in seeing what was the original appearance way back when. I hope you find someone who can help guide your decision.
I have a totally different issue with my soft top color. My car came with hard top only, but a previous owner installed a black soft top & frame. Now, it's time to replace the material and I don't know if I should simply use black again or pick something else. I avoid all these color issues/decisions by being color blind and letting friends & family make color choices for me!
I will depend on my wife and a few M-B Club friends to help pick my soft top color from supplier samples.