Here are some Oatmeal skins you might like to check.
Ezeeboogie created a skin with a Nord type color scheme. You can get it from Wildchurch.com.
A slightly different color scheme will probably feature in a new skin soon (to replace the brighter orange and red colors) and in the meantime you could replace the ezeeskin2nord.png background image with this version.
A new pack with both the Red “Nord” Skin as well as a Black skin is available from Ezeeworld.com
Yeager created a skin that looks a bit like Linplug’s Albino. Get it here. There’s also a dark version available.
Majken‘s skin looks pretty sweet with a grey/blue theme. Grab it from his place.
Majken has updated his skin for Oatmeal version 36-1. Get it here.
To use these skins you simple click the skin button in Oatmeal.