In the Design Settings, you can customize the overall look and feel of aCalendar.

(Other visual options can be found in the Event Display Settings and View Settings. Calendar colors can be changed directly in the calendar list.)

Here are the available design settings:

App Theme

• Background: Choose a light, dark, or black background. Auto modes automatically switch based on your Android system settings.

• Theme color: Sets the main accent color (top bar, headings, mini-overview, etc.).

• Accent color: Sets the color for buttons and clickable text.

Today Highlight

• Today color: Choose the color used to highlight today's date.

• Style for highlighting today: Choose whether to highlight the entire day box or only the date number (in week and month view).

Events

• Font size: Change the text size for events in calendar views.

• Google color palette: Switch between Classic and Modern colors to match your Google web calendar settings.

• Calendar colors: Opens your calendar list so you can set a default color for each calendar.

• Gray-out past events: Dims past events to make upcoming events stand out.

• Solid Colors: Displays all-day events with a solid background color instead of just colored text/borders (for light themes).

• Event display: Opens the detailed Event Display settings page.

Week & Month View

• Shading: Darkens the background for weekends or alternating days for easier reading.

• Grid: Shows or hides grid lines in week and month views.

• Moon phase: Shows symbols for full, new, and half moons on the calendar grid. (Learn more in our Moon Phases guide.)