@leviOsa_09 a lifehack for you: you can merge colours when clicking 'add a variation'. You just can't submit these variations because multiple colours are the same or too similar, but you can keep it in your drafts and use it as a guide.
my friend wants me to make this for her, but the variation she wants has only one color for the volleyball, not two. I know I can't submit a variation because it would mess up the way the strings go. I made a pattern of it, not a variation, so im going to use that pattern to make it then submit a photo to this pattern!