Issue type:

Confusion in large constructions, that just requires inconvenient clicking.

Short description:

Flopper being visually distinctive from hopper. Perhaps the same lighter texture that icon uses.

I'm not sure what you mean, can you clarify?

If I want to build some large machine that uses both floppers and hoppers, it can be confusing to distinguish sometimes where did I put hopper and where I did I put flopper. So I have to check which is which by clicking (checking by hand). Can you make them different by color, so just by looking at flopper from afar you can't confuse it with hopper.