I realize that I am in the minority here, But I can see the color choice being questioned. Not that they don't look good together, but the WAY they are arranged feels strange to me. Let me see if I can explain why it feels strange. I have OCD tendencies and small things that most would not notice, make me obsessive and I itch to "fix them" to fit my perception of what they should be. I actually want to reach into the picture you shared and rearrange the peices to fit my expectations, nerocies whatever.
For example, I would not have had a white center on the dark "flower" I would have used the light purple, so that the flowers were negative images of each other. I also would have made all the peices not in a "flower" the same color, All white or all brown, omiting 1 color completely.
The fact that the background is 2 different colors, but not the same number of peices for each background color bothers me. I keep focusing on counting the background peices (6 white, 12 brown), thinking they will magically change if I count them enough
, instead of focusing on the bigger picture of the beauty of the peice as a whole.
HOWEVER, that being said, this is a great blanket that you obviousely worked very hard on and should take great pride in its completion.
But most importantly, as long as the overall design makes YOU happy, that is all that matters. The judge that questioned the colors, may have a few OCD tendencies himself or might just not like purple.