Appearance

Open settings → appearance to select an accent and dark/light mode.

Accent choices

The app exposes these names through ThemeManager.ThemeNames:

Name	ARGB / hex
Default	#009688
Indigo	#3F51B5
Pink	#EA1E63
Red	#DD4337
Orange	#FF9800
Green	#4CAF50
Blue	#2196F3
Purple	#9C27B0
Teal	#009688
Amber	#FFC107

Default and Teal currently use the same accent value.

Changing the selection stores ThemeName and immediately calls ThemeManager.ApplyTheme().

Dark and light mode

ThemeIsDark defaults to true.

Resource	Dark	Light
Background	Black	White
Foreground	White	Black
Subtle	Semi-transparent light gray	Semi-transparent dark gray
Chrome	30,30,30	240,240,240

The manager replaces standard phone resources such as PhoneAccentBrush, PhoneBackgroundBrush, and PhoneForegroundBrush. In dark mode it also rebuilds several TextBlock styles. In light mode it does not rebuild those text styles, relying on existing resource behavior.

Persistence

The selected name and dark-mode Boolean are saved immediately to isolated application settings. They are applied during App construction before the root frame is initialized.

Adding an accent as a developer

Add a ThemeInfo item to the private Themes list in Helpers/ThemeManager.cs:

new ThemeInfo
{
    Name = "Cyan",
    Accent = Color.FromArgb(255, 0, 188, 212)
},

Background, Foreground, and Subtle properties exist on ThemeInfo, but ApplyTheme() currently derives those colors exclusively from dark mode and does not read per-theme values.

See UI, themes, and localization for resource flow.