I don't know if this counts or not, but in Super Mario Bros. Deluxe's Challenge mode, aren't Red Coins the collectable things? Or are those Yoshi coins?
I added a not about how red coins have a slightly higher collision radius in Yoshi's Island. You can test this by shooting an egg just under a row of coins which contains both red and gold coins. If it's just far enough away so the gold ones don't get collected, the red ones still will be.
Also got rid of the note about red coins sometimes not having a reddish tint, & ordinary coins sometimes having one. In my experience this is untrue. Maybe it is true in the DS game, I don't know, but if so that game should have a different section. Dranorter 12:20, 6 July 2011 (EDT)