Hello.
This morning I am working on ID'ing some Bermuda stamps. I have a pair of one penny stamps with crown over CA watermark that I believe fall under Scott 19. The problem I am having is in determining color since Scott lists four possibilities.
Here is a scan of the two.

Any pointers or tips on dealing with this sort of thing will be greatly appreciated. I have not hit this particular "problem" so far in my work on identifying the stamps in my collection, but it is relatively early in that process.
Thanks in advance,
Dale