Hi. When you create a pipe or an extractor (especially colored pipe) and you want to do something with them at a later time, it's hard to see (especially on high-resolution screens with small GUI) from which material they was crafted. You must sit right in front of the screen. I think there should be added more detailed tooltips that contain item name, material, and color (e.g. Light Blue Cobblestone Pipe, Cobblestone Pipe with Light Blue Wool, or something like that).