Function kui_set_devtools_theme 

#[unsafe(no_mangle)]
pub extern "C" fn kui_set_devtools_theme(
    ptr: *mut KuiCtx,
    base: KuiStr,
    accent: u32,
) -> bool

Seeds the devtools panel’s theme override, which its T and A chords cycle from: base is "light", "dark" or empty for the app’s own; accent a 0xRRGGBBAA colour, or 0 for none. False for any other base word.