I bred a white/violet anaconda but the scanner says it doesn't match the challenge. http://mossms.com/p/Lynx.nowicka/mossm/Oct.Chal.P7M.Denney/
I also bred a violet/white anaconda that looks like the picture in the challenge but the scanner says that doesn't match either.
http://mossms.com/p/Lynx.nowicka/mossm/OP7M.Pierre.Reverse/
Is it me or is something not set right with the scanning?

I think I answered my question. I started breeding when the challenge posted and didn't look at the starting date of Oct 4. Looks like http://mossms.com/p/Lynx.nowicka/mossm/OP7M.Pierre.Reverse/ was bred on Oct 3, after the challenge was posted but before the start date. This is the one that looks like the picture but is violet/white. http://mossms.com/p/Lynx.nowicka/mossm/Oct.Chal.P7M.Denney/ is white/violet, matching the words of the description but not the picture. I think the challenge description for colors is reversed.

I think you're right, the image that appears in the challenge does not correspond to the order of the colors that are mentioned