Here are the available mask dyes. Maybe you mean 1157 blood red? http://www.uorenaissance.com/itemdetails/OreMaskDye/E26/1 http://www.uorenaissance.com/itemdetails/SpecialMaskDye/E26/1
Purchased same mask dye for 9.5m not long ago. You might want to throw some gold up there to see if it moves some heads. Like wtb 1374 mask dye 15m!
Vendor by brit gate stocks several mask dyes for seemingly reasonable price 250k-300k (I assume they are BOD rewards). I picked up a purple colour last night, but there are another 4 there.