# Themes ## Basic themes [Basic themes](/nuclear/theming/themes-basic.md) are presets that come with Nuclear. You'll find them in Preferences > Themes as clickable buttons. They adjust the app's core colors, backgrounds, and text contrast. You can't create your own basic themes. ## Advanced themes Advanced themes give you complete creative control through JSON files. You can customize colors, accents, fonts, corner radii, border width, and shadows. They work in both light and dark modes, and you can see your changes live as you edit. Drop your JSON files in the themes folder and pick them from the Advanced themes dropdown. See [Advanced themes](/nuclear/theming/themes-advanced.md) for details. ## Theme store The theme store lets you browse and install community-created themes from within Nuclear. You can install them with a single click, and contribute yours. See [Theme store](/nuclear/theming/theme-store.md) for details. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.nuclearplayer.com/nuclear/theming/themes.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.