Solid Colored Blocks:
Blue: Enables you to walk on walls and the ceiling!
Green: Gives you a jump boost when the block is below you, or levitation on green walls!
Orange: Speeds you up and grants you the ability to walk on holo blocks!
Red: Don't touch it, you'll die! But you may want to shoot it with red paint to create lasers that you can step on! :)

Paintable surfaces:
Whenever you paint a paintable surface, it will have the exact same properties as
If you paint a wall blue, you can walk on that wall, if you paint it yellow, you will get a speedbuff! :)

The only block that slightly changes is the red-painted paintable surface: You will NOT die on this one. It's just not concentrated enough to kill you! (and it would really annoy you, trust me)

The PaintGun:
Rightclick to

There are many more features in this box, I just haven't found the time to document them :)