Fun little flash game/program

Hell of Sand Falling Game

Fun little flash thingy (not sure how to classify it, it isn't really a game...)

Similar to those sand clock/turny things that were popular in the mid-90's, 4 different types of 'sand' flow down.
Tan = Sand
Blue = Water
White = Salt
Maroon = Oil

Oil is burnable, water + plant (one of the options to manipulate things) = plant growing.

Concrete is wet and dries after a while. Salt in water makes a different color.

It's really quite relaxing - mindless yet entertaining ;p