My very first job coming out of college was User Interface Design with Industrial Design company, Design Interpretive. I was working with DI for 2.5 years on this project, and it was probably one of the best experiences learning User Interface and User Experience.
I was responsible for creating icons.... hundreds upon hundreds of icons. Somewhere along the lines of 400+, but one of the biggest changes I had made for the software was the look and feel. I had helped create a working system of modules and themes that could have colours changed at the switch of a setting.
The images following are NOT of the actual software, but are of the testing software I was given to make sure the icons looked correct and changed with the themes. The testing software itself shared some of the same features as the end product.