Theme and font

Theme exposes semantic color roles instead of hue-specific names.

Theme page

Theme colors are named by where they are used, such as text.normal or system.warning. This lets one palette restyle the complete interface.

Select NAME to choose NEW, LOAD, SAVE, or RENAME in the bottom bar. Select a color row to edit its RGB channels:

• Left and Right choose R, G, or B.
• Hold Enter and use Left or Right for ±1.
• Hold Enter and use Up or Down for ±10.
• Hold Enter and press Option to reset the selected component to its default.
• Every component is clamped to 0–255.

Changes preview immediately and are saved when you leave the page.

The 20 editable roles

Group	Semantic roles
Surfaces	surface.bg, surface.top_bar, surface.bottom_bar
Text	text.normal, text.dim, text.highlighted, text.colored
Editing	cursor.primary, cursor.row, selection.active, playback.active
System	system.info, system.warning, system.error
Battery	battery.normal, battery.charging, battery.low
VU	vu.safe, vu.warning, vu.peak

Faint text, cursor corners, muted playback color, VU track color, and gradient steps are generated from these roles. They are intentionally not extra user settings.

The editor previews exactly what the current values produce; it does not enforce a minimum contrast ratio. Keep text.normal distinct from surface.bg, and keep cursor, selection, and playback roles visibly separate from both the row background and their text. If a theme becomes difficult to navigate, use NEW to restore the default palette before saving again.

NEW, LOAD, SAVE, and RENAME

• NEW restores the default semantic colors, then asks for a theme name.
• LOAD opens the Theme Browser. Select a theme and choose IMPORT.
• SAVE exports the current settings. An existing destination requires an overwrite confirmation.
• RENAME changes the active theme name through the keyboard page.

Theme names may contain up to 16 characters and follow the same single-path- component safety rules as project names.

Share a theme

NullPerator themes use .npt files in the Themes folder. Load and save them through the Theme page so NullPerator can check that the file is complete before changing your live colors.

Renaming an older theme file to .npt does not convert it. If a theme is rejected, your current colors stay unchanged.

Font page

Font keeps text-case behavior separate from user-authored names.

The Font page has two fields: CASE and FONT.

Text Case

Use Left and Right on CASE to cycle among:

Choice	UI labels become
Case	Title-style words
CASE	Uppercase
case	Lowercase

This preference changes built-in interface labels. User-authored project, instrument, sample, file, and path names preserve the case that was entered. The choice is saved in device configuration.

Font actions in 0.1

The bottom bar offers BROWSE and DEFAULT:

• DEFAULT is implemented. It restores the built-in Regular face and saves the configuration.
• BROWSE is not available in NullPerator 0.1 and reports FONT BROWSER UNAVAILABLE.

Only the built-in Regular face is available in 0.1.