I am not in a position to comment on the colour, other than to agree that the photographs are different. There is a consensus that something seemed to have gone wrong and that there has been some attempt to cover it up. Before you send your final email, read through everything you have shared on this thread and get a very clear picture of the sequence of events, because various details have emerged as the exchanges have progressed.
Stick to the facts and avoid suppositions.
As I have just suggested to another poster with a problem, you need to be clear of the outcome you seek: a replacement bag; compensation; a restoration to Orange Poppy; just the truth?