Holt Renfrew Cashmere long coat size 6

I have worn this on NYE every year since I got it. bought for 1000 at Holt Renfrew. I'm just sick of red. I'd like to dye it black but first I'll try and sell it as is. nothing wrong with it. stored in a moth free closet, has red satin lining, ask me for more measurements if you need to. I'm a 36b and it fits perfect in the chest. very flattering coat. asking $500 obo 90% Virginia wool, 10% cashmere butter 100% acetate satin lining 100% cotton interlining insulation