i can understand your point of view, but personally, if i was going to spend $150k on a special run HSV, id want it to look the part. for those not in the know, its just another HSV. hence my suggestion of making them a "one off" colour, (just like the VL walkinshaw was exclusively Panorama silver).
i didnt see the silver W427 comapred to the VL Walkinshaw, so i cannot comment on the difference nor can i comment on the red interior with the silver (makes me sick just thinking about it)... maybe its just me wanting to keep this traditional colour exclusive.