Chrome crx creator is a free application for Windows that allows you to graphically create themes for Google Chrome, without requiring advanced knowledge of Chrome theming.
Chrome crx creator shows a picture of Google Chrome with distinctive numerical indicators. Each number corresponds to a customizable interface element.
In the right column we see each of those parts correctly identified, along with controls to modify them (color picker, image uploader, etc).
To create the theme, just press the pack theme button. This will create a folder with the theme we designed, ready for packing.
Chrome Crx creator also allows previewing the theme before saving it and sharing the theme on the gallery at the website of the program.