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I've been working on this for a while, and I update it frequently. It's a texture pack that started as editing the default textures slightly, and branching off from there. You'll notice many of my blocks are based off the defaults. The water is modified Painterly and the lava is Coteriecraft. As of 1.3, I'm using LB's Photorealism's foliagecolor.png and grasscolor.png. The liquids are temporary, I'm working on my own. You'll need the patcher for custom liquids and foliagecolor.png, which I recommend. http://www.minecraftforum.net/topic/279804-16x15-sombercraft-12-wipalmost-everything-redone/
To install a texture pack, the file must first be obtained in a ZIP format. Without decompressing the file, place the ZIP file in:
This path can be opened by using the Open Texture Pack Folder button from the game client. Once a texture pack is installed, it can be selected in the Mods and Texture Packs screen accessible from the main menu, but not while a world is currently open.