A long ago I was so into making pixelart with beads, one of the designs I most enjoyed was the onigiri one. I'd had the idea of making a pixelart onigiri which could be modified with a few clicks, using only HTML + CSS + jQuery.
You can try it right now here: http://wearecodex.com/pixelin/
For this one I used Atom with Emmet to make the development faster.
This is exactly what it does right now:
How it was made
First I set all the base using spans
in my HTML file, like this:
<span class="space"></span>span><span class="space"></span>span><span class="space"></span>
<span class="AD57FF"></span>span><span class="AD57FF"></span>span>
<div class="clear"></div>
Here, each span represents a pixel, the class gives them their color. For example:
span.AD57FF{background:#AD57FF;}
Then I added the buttons which control the form of each pixel with this code:

It will have more functions in the future. Stay in touch!
Merged pull requests:

I am a professional graphic designer. You can find me here {
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Posted on Utopian.io - Rewarding Open Source Contributors