A couple seconds later, the red glow in its eyes faded.

The orange glow faded into the distance and was gone.

For a moment the heat became greater, then the glow faded.

The glow would fade, then minutes later grow stronger, leading into the light of day.

The glow from the walls faded and was gone, leaving him blind.

When the giant fell, the glow from its eyes faded away, and all was dark.

The glow faded in about 90 minutes, time enough for lunch.

To his surprise, the glow of interest in her eyes faded.

Even as this decision was reached, the green glow faded away.

She swallowed, and the glow faded out of her skin.