When you want to make your diagrams stand out or fit a specific brand style, Mermaid offers a range of advanced customization options. You can adjust colors, fonts, and even tweak the layout of your diagrams to better communicate your ideas. These features help you go beyond the basics and create visuals that are both informative and visually appealing.

To change colors in Mermaid, you can use the style directive or assign classes to nodes and then define their appearance using CSS-like syntax within the diagram code. This lets you set background, border, and text colors for elements. For fonts, Mermaid allows you to set font families and sizes either globally or for specific diagram parts. Layout tweaks, such as adjusting node spacing or direction, help you control how diagrams are organized and displayed, making complex information easier to follow.

When customizing diagrams, always keep readability and consistency in mind. Use a limited palette of colors that work well together, and choose fonts that are easy to read at different sizes. Consistent styles across all diagrams in your project make your visuals look professional and cohesive. Avoid over-styling, which can distract from the information you want to communicate.