Metallic Madness adds new metals and materials for use in modpacks, as well as some bonus items and textures.
In the way of new materials, we have Brass, Ender Alloy, Fractalum, Infinity Crystals, Platinum, Pyrum, Steel, and Tin.
Each of these has block and nugget forms.
Also included are nugget forms for diamonds and emeralds, and three decorative blocks.
Also included in the files are textures for two arrows and a dyeable paint bucket. I couldn't get these to work myself, so I'm allowing any of you to get them working for me.
Yes, I know the Block of Infinity hasn't got a yellow name. I couldn't figure out how to do that.