Here are the steps to achieving the tools made of Dark Pearls.
1. Collect these resources Iron, Redstone, Ender Pearls, Nether Star and Spider Eyes (you only need one Nether Star for all the tools)
2. Smelt the at least a 64 stack of Dark Ore.
3. Make 2 blocks of Dark Ingots (same recipe as making a Iron Block except with Dark Ingots)
4. Then with those 2 blocks make a Transfer Block (all recipes below or use NEI/TMI).
5. Once you make this Transfer Block right click and continuously click the the button that should pop up in a basic GUI form. When you do this you get Rouge Dark Ingots.
6. Now make a Binder and right click it. As soon as this is done you will see another GUI. Now make sure you have a Nether Star and some Rouge Dark Ingots. Then start clicking the button in GUI and it should convert Rouge Dark Ingots into Dark Pearls.
7. These Dark Pearls are what are used to make all the tools which recipes are shown below.
Recipes and a bit information about the tools.
Dark Ingot Block
Transfer Block = 6 Redstone, 1 Hopper and 2 Dark Ingot Blocks.
This absolutely looks like it has nothing to do with darkness... i was expecting some skills for the player that would only work in the dark or something like that, but it's just random tools with dark in the name, i wonder, if you called them cow tools, would the mod be The Cow Process?
That would be a great idea! Like I said just a basic mod but some upgrades can be made.