The color of antimony in the inventory is too close to the red color of items you don't yet have enough to refine. I've glossed over it a few times because I can't tell the difference, and I have a monitor with good color coverage and accuracy, with calibration.
A minor complaint, I know, but it would be nice if it leaned closer to pink so that it could be easily distinguished between refinable and not.
EDIT: It also looks even closer to the same when it is mixed in with the rest of the materials in the crafting menu. I also imagine this is potentially worse for people with various types of color blindness.
Edited by jrgray93 on July 16, 2018 7:26PM EP: Slania Isara : Harambe Was an Inside Job