Themes.json -

In WordPress, theme.json is the configuration file for block-based themes. It allows you to define global settings and styles that apply to both the front end and the editor.

Depending on whether you are building a modern website or a data report, a theme.json file serves as the "brain" for your design, controlling everything from colors and fonts to layout spacing. themes.json

In Power BI, a JSON theme file dictates the default appearance of all visuals in a report, such as chart colors and border styles. Use report themes in Power BI - Microsoft Learn In WordPress, theme