Thanks! I didn't notice that, but I went back to find out the glass you mentioned. That was pretty obscure. I had already brute forced the puzzle behind it, so I was wondering the proper way to get through this.

The picture next to it shows the view through colored glass that lines up after solving another puzzle. I couldn't get it to line up to solve the puzzle from a distance to give a more clear shot.

@Eneli I also realized too late, but the previous pic shows looking at this puzzle through yellow glass. I guess the purples and yellows should have hinted to look for stained glass.

How is this a solution? Maybe I missed the lesson teaching secondary color stars