You can redye it one of two ways.
1-You could overdye it, but the draw back of this is that the camo colors will effect the end result(probably end up black or dark brown)
2-Another possibilty would be to bleach it. Your PF won't come out white but it would probably be light enough so you could dye it without to much influence of the previous colors.
Just remember, if you bleach it, make sure it is rinsed super good afterwards, you don't want the bleach to ruin your...