Randomize sulfur on belts

[KahoInvictus]

Related: https://www.reddit.com/r/factorio/comme ... me_visual/

In the past, sulfur has been a rarely seen resource, as most players tend to transfer it directly from chemical plant to chemical plant.

However with the new upcoming science changes, this will change. People will be belting sulfur for chemical science production.
While sulfur is not a mined product like ores and coal, it is still a naturally formed mineral (albeit within an artificial environment; the chemical plant). It'd make sense, and look great, if sulfur received the same "randomized" texture overhaul given to ores on belts.

[Oktokolo]

Sulfur should look like yellow bricks or small piles of powder on the belt. As it is a refined product, having the separate "items" all look the same is okay.