Thanks for the hint, just tried it and it not behaving as I need to. Expected behavior in HSL color space would be anything with the same Hue and Saturation va

Thanks for the hint, just tried it and it not behaving as I need to. Expected behavior in HSL color space would be anything with the same Hue and Saturation value (with optional adjustable thresholds) of a selected color gets assigned an alpha value of 1 - lightness. Where lightness of 1 being white and alpha of 1 being opaque. KillWhite seems to do exactly this: http://mikes3d.com/extra/wp-content/uploads/2010/07/apple.png http://mikes3d.com/extra/wp-content/uploads/2010/07/apple.pn... I guess by now, it's easiest for me to re-implement this as a filter for HTML5 2DCanvas.