Bootstrap Magic is a free but powerful tool to create custom Bootstrap themes in-browser in minutes. We’ve tried it out and we have to admit that it’s a great product, simple and easy to use thanks to a built-in HTML editor with live reload.
Bootstrap Magic leverages Sass’s power to make all helper functions available to you. In addition, you can pick any font from Google Fonts library to be added to a theme and, last but not least, when you’re happy with your customisation you can download the CSS file and SCSS partials.
Check out Bootstrap Magic