This mod is now "abandoned" and no longer worked on. This mod has been the definition of Developer Hell :wheeze_crisis:
Image Soon:tm:
Pastel Wonderland is a mod that uses pastel colors and feels to provide you with a beautiful, yet chaotic, dimension. All blocks are unique, and worldgen doesn't use any vanilla blocks (or is at least planned to not use any).
This mod is still in its early stages and in development, you can grab the latest archives from the actions tab, once that is set up. You're likely to encoutner many a bug and issues with certain things working or not.
This mod is required... I'd recommend downloading it.