Themes

Options → Theme lets you pick a visual theme for the menus — background images and button styling/sound effects.

Pick a theme from the list on the left; a preview appears on the right. Harmonicon ships with a couple of themes out of the box, and reads additional ones from ~/Harmonicon/themes/ the same way it reads extra songs (see Getting Started) — drop a theme folder there and it appears in this list without needing to reinstall anything.

Themes control appearance only: backgrounds, button art, and button sounds/ shader effects. Where every button actually sits on screen is always the page’s own layout, not something a theme can move around — so switching themes never rearranges a menu, only re-skins it.