Create an image that features stained glass. It can be a standalone image of a window or incorporated into a scene.
Canvas size - Max 150 x 150.
Colours - Min 10.
Transparency - Optional.
Animation - No.
The challenge thread will have all the challenge updates. The thread is also a great place to post your WIPs.
A minimum color count?.. Anyone up to making a piece with 22500 different colors? 
That's the first time I see a challenge with a minimum color count. Feels weird.
Yep, sorry, it's a maximum of 150 x 150.
I need to stop making the mistake of not specifiying :|
Actually, it's not clear whether it is max or exact. It happened earlier too and I had posted a comment about it, and it was soon changed from "[canvas size]" to "max [canvas size]" if I remember correctly. So it may or may not be exact.
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That would blow up any computer out there