Flat Colors Guide is a Chrome add-on developed by Ullisses Castro. As the name suggests, it is a color guide specifically designed for those who want to create layouts following the popular flat design trend. With this tool, designers can easily access a wide range of flat colors, making it convenient to incorporate this aesthetic into their projects.

The add-on is user-friendly and easy to navigate. It offers a comprehensive collection of flat colors, categorized into various shades and tones. Designers can quickly browse through the different color palettes and find the perfect hue for their designs. The add-on also provides the hexadecimal codes for each color, ensuring accuracy and consistency in color selection.

Flat Colors Guide is a great resource for designers who want to stay up-to-date with the latest design trends. Whether you are a beginner or an experienced designer, this add-on can be a valuable tool in your design process. Best of all, it is completely free to use, making it accessible to designers of all levels.