Ghoul Arte

I want to like this game, i really do... but i can't understand, for the life of me, why the Devs decided to make an essential progression item, not only incredibly difficult to see for those with visual issues, but not behave at all like it's real world counterpart. I'm talking CLAY. Why, oh WHY!!!!??? I can't find it anywhere, no tutorial is helpful, and no suggestions have helped me... might just refund and continue searching for similar games... it's not just me either, i see this same topic everywhere.