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Open your Layers and Channels palettes; Make your image a regular layer as opposed to a background layer. Easiest way is to double click the layer bar in the Layers palette; In the Channels palette, make sure the RGB channels are visible, then click the leftmost icon on the bottom, 'Load channel as selection'; In the Layers palette, click the 'Add Layer Mask'...


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Solved, I had to use a tool called "Silhouettes" in Illustrator, export to SVG (vector), open with Inkscape and ungroup the four letters.


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if the white in your icons is actually transparency: Set the alpha-lock for the layer (checkerboard icon at top of layer list) Make sure you have no selection Bucket fill with new color, the alpha-lock will protect the transparent pixels (actually, it will make sure all pixels keep their initial opacity).


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In ImageMagick or GraphicsMagick: mogrify -fuzz 50% -fill violet -opaque "#F4BF75" *.png I used "identify -verbose file.png" to display the histogram and determine that #F4BF75 is the predominant orange color present. The fuzzing is needed because your samples are antialiased and have a variety of approximately orange colors present. You can omit "-fuzz ...


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In Gimp: Open the document Open Hue-saturation tool ( Instructions ) When you got the Hue-saturation window open, just adjust the hue slider like a crazy person and you should see the colors change.


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Transparent gradients are not supported in PDF. There is no neat solution to this problem, what you could try and do is flatten the gradients to bitmaps before exporting. To do this, go to Layer > Flatten selection to bitmap.



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