Alpha Glow

The Alpha Glow effect adds color around the edges of a masked alpha channel. You can have a single color either fade out or change to a second color as it moves away from the edge.

Glow slider Controls how long the color extends from the alpha channel edge. Higher settings produce larger glows (and can cause very slow processing before playback or export).

Brightness slider Controls the initial opacity of the glow.

Start Color Shows the current glow color. Click the swatch to choose another color.

End Color Lets you add an optional color at the outer edge of the glow.

Fade Out Specifies whether the colors fade out or stay solid.

Applying Effects > Video effects included with Premiere > Alpha Glow