Themes and syntax

Six themes ship: VS Code's Dark Modern, so the editor looks like the one beside it, and the popular ones — Monokai, Dracula, One Dark Pro, Tokyo Night and Nord — each as the file its VS Code extension carries. Any other is a VS Code colour theme JSON — the file a theme extension carries under themes/, comments and all — dropped into ~/.config/ycode/themes/. Its colors drive the chrome and the agent pane's palette, its tokenColors the syntax; a translucent colour is laid over the editor's ground, and whatever the file leaves out keeps Dark Modern's value.

F9 lists what is there and switches; the choice is saved as theme.

The colours are used by role rather than by name: the accent is deletions, unreviewed edits and the live border; the success colour is additions, the agent at work and the branch. A theme that names list.hoverBackground gets its own hover; one that does not keeps Dark Modern's.

Syntax colours come from syntect's grammars, which cover the usual languages. A .sublime-syntax in ~/.config/ycode/syntaxes/ adds one, and a few extensions without a grammar of their own — ts, toml, kt, swift, zig — borrow the nearest.