I cloned this site for my pop’s blog, and I had to change the colors in the rounded corners graphics. I needed to set the color outside the corners to the site’s background color, while colorizing the inside. Gimp once again made it a snap.

  • Get the “http” RGB colors for the before-and-after corner colors
  • Open the image, convert to RGB, select all
  • Colors->Map->Color Range Mapping
    This is sweet – use beforecolor-to-white above, and aftercolor-to-white below.
  • Select the magic wand, and Ctrl-click in the corner to exclude only the solid corner color
  • I used Colors->Hue Saturation->Lighten to lighten everything but the corner (which had to match)

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