Set the selection outline color and opacity.

Choose the outline color

Open Settings, expand Selection Box, and use Border color. Select the swatch to choose the color used for the outline around the region you are drawing.

The hex value beside the swatch shows the current border color. This control changes the outline only, not the dimmed area or the selected region's interior.

Set the outline opacity

Use Border opacity to control how visible the selection outline is. The slider accepts values from 0% to 100%.

1. 1

   Open Selection Box

   Find the Selection Box card in Settings.

2. 2

   Set Border color

   Choose the outline color from the swatch.

3. 3

   Set Border opacity

   Move the slider until the outline is clear against the screen.

4. 4

   Draw a test region

   Start a manual selection to review the outline in context.

Understand Automatic Screen Capture behavior

When Automatic Screen Capture is enabled, LowLighter uses a saved region and does not open the normal manual selector. The Selection Box styling rows, including Border color and Border opacity, are shown as unavailable until Automatic Screen Capture is turned off.