Wait, is there a difference if you put multiple shards in a single hut than if you put just one in?If I don't need them for that, well, I love putting 4 in each Junimo Hut so that my Junimos go prismatic. That's always fun.
Yes, the color is more vibrant or less pastel with the more gems you put in. You can actually put in any gem, foraged mineral or geode mineral too... and they work using the sewing machine dye rules. In the sewing machine, all gems and minerals are weak dyes requiring 4 to get full saturation. On another save I have 4 amethysts in each junimo hut because my farmer is Amethyst and it's her Purple Farm. It has been a long time since I've verified this, because if I'm doing prismatic junimos I just put 4 in, but I do seem to recall having prismatic pastel junimos with only 1 shard. (Edit to add: I tried to verify quickly, but in literally every one of my saves with junimo huts I have it is Winter, it is raining, or I simply have nothing to harvest currently so no junimos are out.Wait, is there a difference if you put multiple shards in a single hut than if you put just one in?