If any of you are handy with a sewing machine you could try making it. I know jo Ann's sells tons of patterns and you should be able to alter one that you like easily enough (that's what I did to make our sanderson sisters costumes and I had never sewn clothes before). Simplicity patterns seem to be the easiest to work with. You could also try buying a pair of red pants and a pair of black pants that fit (and similar styles) and take a seam ripper and take them apart then sew those two halves together. If you try dying pants I would think dying the red half then the black would work best since the black should cover up any red that needs to be covered. Just a few ideas off the top of my head hope they help!