It’s written by TNG user Erik Hoppe, and basically it allows you to more easily customize the color scheme of your TNG template. You select a template, then click on the area of the screen that you want to customize. A small legend area on the right shows you what area(s) you’ve selected (you can also select an area with the radio buttons under the legend).
Once you have an area selected, use the controls along the bottom to change the colors or just tinker with the RGB values. When you’ve got something, you can use the Test features to see how it looks on a real page, and when you’re happy with the result, click “Make CSS” and it will spit out the code for you to paste in your template’s mytngstyle.css file (specific instructions are included at the top of the code).
Very cool, if you ask me. It’s also free, although if you’re able to make good use of this tool, Erik would appreciate any donation you can throw his way.
Go take a look! Thanks Erik!