Challenge page : http://www.ancientsocieties.com/stained-glass/
No Challenge Text, only little scratches on the windows.
We can superimpose the scratches per color, we get this :
These are KATAKANA characters (http://en.wikipedia.org/wiki/Katakana)
We have 4 characters : ヨ,ッ,ー and シ
Be careful, Katakana has large ヨ and small ョ, large ツ and small ッ.
Try making words with those characters…
Here are some of the different combinations of 4 letters :
ヨッーシ
ヨッシー
ヨシーッ
ヨシッー
ヨーッシ
ヨーシッ
But the right one is given by the colors at the top (left or right, they have the same colors).
The answer is ヨッシー
The solution page is http://stl.la/ヨッシー, this page is redirected to http://www.ancientsocieties.com/unicycle/