Dye Trees by Reika
DyeTrees adds one color of tree for each dye. These trees spawn in the world, somewhat rarely, and can generate with any log material, either vanilla or from mods
Dynamic Crafting Systems by DocRedstone, OpaqueMango
Dynamic Crafting is a mod that is based around performing advanced autocrafting operations in a very compact space, the minimum space that can be used is one block and the maximum can be an entire network. The crafting is designed in a modular manner that can allow you to do basic crafting, to multiple crafting with schematics, to smelting and crafting in the same block. This wiki will provide all the information that you will need!
Dynamic Earth by Karuberu
A mod that adds life and variety to dirt in Minecraft. Now it's actually useful!
Dynamic Elevators by Ironclad49er
Dynamic Elevators adds an easy to build, redstone free option for your vertical travel needs. Simply place an elevator block and it will automatically detect all of the possible floors it can travel to. Add multiple elevator blocks next to each other to make bigger elevators. Right click the elevator to bring up a floor selection screen. Place elevator call buttons to bring elevators to your current floor.