The colors are amazing! I had no real plans when I purchased them, but after taking a sample*, ideas are already swirling around in my skull, like a galaxy. *as pictured: I put some clear UV resin in a small jump ring, a super small amount of color on a toothpick, then mixed it in. After which, I put the cured rings on the lids with tiny double-sided tape. Now I won't confuse which bottle for which! Especially the two different blues.