I have no idea if it works or not, I'll need to test it out. Whenever I try to apply heterochromia to a character, AI can never figure out left and right, so I thought I would make some presets. But from what I've seen, it's still doing that with this lora. I am not really sure how concept ones work yet, so I'll run some experiments and give it another try later if nothing works.

Run it at very high weight, like 1.5 or 2.

Red Right, Blue Left: heterochromia, H_R_B, red eyes, blue eyes

Blue Right, Red Left: heterochromia, H_B_R, blue eyes, red eyes

Red Right, Green Left: heterochromia, H_R_G, red eyes, green eyes

Green Right, Red Left: heterochromia, H_G_R, green eyes, red eyes

Red Right, Purple Left: heterochromia, H_R_P, red eyes, purple eyes

Purple Right, Red Left: heterochromia, H_P_R, purple eyes, red eyes,

Green Right, Yellow Left: heterochromia, H_G_Y, green eyes, yellow eyes

Yellow Right, Green Left: heterochromia, H_Y_G, yellow eyes, green eyes

Pink Right, Grey Left: heterochromia, H_P_G, pink eyes, grey eyes

Grey Right, Pink Left: heterochromia, H_G_P, grey eyes, pink eyes