Decolorizer


Make a copy of your original image.
Now make it grayscale by choosing Colors/Grayscale,
then increase the color back to 16 million by choosing Colors/Increase Color Depth/16 million.
Next paste the original image as a new layer over the gray one.
Use the Lasso tool and select the area you want accented by color.
Invert the selection, Selection/Invert. Then click delete. Deselect, save, and you are done.
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