The Matte filter replaces transparent areas of an image with a solid color of your choice. This is particularly useful when repurposing transparent PNG files.
About the Matte filter
This filter can be found in the Filters Studio.
Settings
The following settings can be adjusted on the context toolbar:
Mode—choose a color from the toolbar (Color) or from an active swatch (Primary/Secondary).
Color—sets the fill color when Mode is set to Color.