Note: only recolor your own, self-made skins!
Recoloring somebody else's skin without permission is considered skin theft, and a copyright violation!



Step 1

Grab yourself Paint.net [​download link]: a free, lightweight & simple image editing program.

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Step 2

Open your skin in Paint.net and copy each skin part to a new layer.
Select the parts with the selection tool.



Grab your layer pop-up



Grab each part by copy-pasting it from the original layer to a new layer, like so:



Having parts in separate layers allows you to play around with recoloring each bit without ruining progress on other parts.
If a recolor goes wrong you can just delete the layer and make a new one.

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Step 3

Select the layer you want to recolor and use the available tools in Paint.net to do so.
Hue / Saturation, Curves and Brightness / Contrast

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Step 4

Merge all layers with the bottom one & save your new skin variation as a .png file.

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Extra!

To prevent spam: post the variations of your skin in the description of your original!
You can host their files and previews on imgur.com.

Example skin:


Romecraft (+3 versions) by DinowCookie