The Remove Color Matting effect removes color fringes (halos) from layers with premultiplied color channels. Halos often occur when an area of partial transparency retains the color of the original background and is composited into a context with a different background color. Use this effect in conjunction with effects that create transparency—such as keying effects—to achieve more control over the appearance of areas of partial transparency.

Use Background Color to specify the new background color. To allow this effect to generate color values outside of the range 0.0-1.0 when working in 32-bpc color, deselect Clip HDR Values.

This effect works with 8-bpc, 16-bpc, and 32-bpc color.

Original (left), and with Remove Color Matting effect applied (right)