|Sparticle Skin Templates|
Skin Templates for Higgs, Boson and Quark.Â These are image files you can use as a template to create your own skins.
Use any paint program like Photoshop.Â Then just use the Contructor application to create a skin file you can share with others.
There are a bunch of Free "Online" Design programs you can use to easily paint your own skins here.
This one is great, toons of tools, you can use the Image Editor or the Vector Editor.