HD had them last year, but not now. They were significantly cheaper, as I remember, than the 250 spot the bookstore wants to drop on you. Dick's has solid (non-orange) colors for $70-80. Hard to believe that orange dye costs that much more.
Supply/demand economics aren't going to work in your favor this week...
So just think of it as an investment in your tailgating future and amortize the cost over all home games for the next 5 years. $250 will start looking pretty reasonable then.