Instructables

Step 4: Count pixels of each color so you can buy pins accordingly

Picture of Count pixels of each color so you can buy pins accordingly
Your histogram can count the number of pixels selected.

Using your magic wand tool set to non-contiguous regions, tolerance = 0, visit your tiny 90 x 120 .gif and select each color in turn.

Record the count reported by the histogram for each color, That's ho wmany push pins of that color you'll need.
 
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