Here are all the Siegel listed 205c (probably represents the overwhelming majority of all known 205c's).

One of the first things that should jump out to people is the centering of these Special Printings. Other than a few aligned slightly towards the top, they are all fairly well centered (for this era). None show the design touching into the perforations; I assume that Special Printing would not be released with poor centering.
Forget trying to compare digital image colors as an identifying criterion; there are far too many variables to be used reliably. Trying to base an ID using either stamp color or stamp paper while asking for verification online is also virtually impossible. Color and paper ID using images is almost never definitive (images can be processed/saved in a way which either supports or rejects a possible candidate for color or paper).
Lastly, when it comes to a rare stamp like 205c, the odds are very close to 0 that any of us would stumble upon one. The best way to approach IDing stamps is to always start with the assumption that you have the most common variety.
Don