This simple recipe will show you how to change a layer mode to the Overlay mode:
This mode combines colors by applying either Screen or Multiply, depending on the overlapped colors. Bright areas become brighter, while dark areas become darker. In the preceding example, the central rectangle has disappeared from the region where it overlaps the white background, but it has become light yellow and golden yellow across the top stripe, and light purple and bright purple across the bottom stripe. The blue vertical stripe has all but disappeared across the top yellow stripe, and has become a medium blue in the area where it overlaps the purple one. The vertical red stripe has become golden yellow across the top stripe and bright purple across the bottom.
This mode can be used for special effects and color correction in illustrations and comic work.
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