Cloud



Clouds are an aspect of a map that appear close to the top of the map, they have no practical service and are merely aesthetically pleasing. They do however, float towards the West[although it is believed by most that they float North Notch confirmed otherwise], making it fairly simple to get your bearings. Clouds appear at layers 108-112 and will pass through blocks.

Appearance
Clouds will appear differently on different graphics settings, and have a set pattern.

Fancy Graphics
On fancy graphics, clouds appear as about four block tall transparent prisms. In the nighttime they turn a shade of blue and become more transparent. Their smallest horizontal dimensions are 12 x 12 blocks wide.



Fast Graphics
On fast graphics, clouds appear as opaque planes. They have no daytime/nighttime rotation. Their smallest horizontal dimensions are 8 x 8 blocks wide.

Pattern
Unlike many things in Minecraft, clouds are not procedurally generated. With a texture pack, clouds' color can be changed to anything, meaning you could have pink clouds if you so desired. The file can be resized to any size, meaning it would be possible to have a different cloud pattern each day.