I found a listing on eBay for Marchant Exhibit Ernie Banks cards and the photo showed a Banks 'rainbow'. The seller calls them Sepia, blue and brown. That means either the 'brown' is what I've seen called 'red' or there is another color in the 'rainbow'.
The Pierce was part of a two part eBay 'lot' which included this Jimmy Piersall. They cost me $2 total and I was happy to pick up the Piersall. He's quite a story.