Ok... I'm 21. When I was in like middle school? we would always mess around on a mandala creator website with a black background (I think you could change the color tho maybe) and the lines were kinda glowy and it was super colorful. Super simple, you would pretty much just drag your cursor around to make the shape. I was looking up websites trying to find it, and it's definitely not Inspirit but it looked super similar to what I'm seeing from there (based on my very old far off memories) Seems like Inspirit has some complicated controls tho, and this was a super simple website.

It's been driving me CRAZY. I want to play on there!! Does anyone know what I'm talking about??