Pea Pod Colouration in the F2

I'm growing out the first batch of F2 Snow X Purple peas. They have taken quite a while to develop pods - five months!.
And they haven't produced purples in the ratios I would have expected - but more on this when I do a final tally.

Of interest today is the way the purple colour is distributed on the pods. One plant has given pods that are mostly purple

 The next is mostly purple, but with green areas

...and on another plant, complementary colouration, what I'm calling 'purple dusted'. Neat how the two genes fill in each other's gaps to get full purple.