Is there a (relatively) easy way to convert/exchange a large number of close
RGB-valued "grey colors" to one single color? This is relevant to an image
with "up to 255 shades of grey", or black, or ....
In other words, is there a way to convert or exchange a "range of color"
whose RGB values are close to each other, say within 1-5% (as shown by Color
Picker), varying from, say, 71-121 (in the Color Wheel). I have used Color
Exchange a lot, but that only works on one "shade value" at a time.
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