More than just this "color to alpha", this post describes in detail useful methods and approach to ImageMagick manipulation.
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A shitload of ImageMagick scripts
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delete tweets after some time
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Python scripting in Scribus
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Lightbox JS is a simple, unobtrusive script used to overlay images on the current page. It's a snap to setup and works on all modern browsers.
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This JavaScript VectorGraphics library provides graphics capabilities for JavaScript: functions to draw circles, ellipses (ovals), oblique lines, polylines and polygons (for instance triangles, rectangles) dynamically into a webpage. Usage of this Vector
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free DHTML & Javascript scripts
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