PDF Studio Overlay Comparison Feature allows to customize the colors of the 2 documents that are being compared. The colors are be remembered when the “Compare Overlay” dialog is closed.

When changing from the default colors, we suggest using complementary colors when comparing PDF documents using the Overlay Comparison feature in PDF Studio. Complementary colors are colors that add up to black which will ensure that the common elements on the two drawings / documents are displayed in black (overlay of the 2 complementary colors).

Using RGB (Red, Green, Blue) values, complementary colors are colors that add up to (255, 255, 255).  See below for a few color pairs of complementary colors. The number in parenthesis represent the color in RGB  values.

Cyan (51, 204, 204) / Dark Red (204, 51, 51)

These are the default colors in PDF Studio.
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Green (0, 204, 51) / Dark Pink (255, 51, 204)

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Blue (0, 125, 255) / Orange (0, 125, 255)
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Green (0, 255, 0) / Red (0, 255, 0)

Note that the common elements in both drawings are not as black in this color pair as for colors above because the colors do not add up to black but the contrast is quite good.
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