How to use javascript to get brighter or darker color values for any color
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Sample code
Function LightenDarkenColor (col, amt) {var usePound = false; if (col [0] = = "#") {col = col.slice (1); usePound = true;} var num = parseInt (col,16); var r = (num > > 16) + amt; if (r > 255) r = 255; else if (r
< 0) r = 0; var b = ((num >> 8) & 0x00FF) + amt; if (b > 255b = 255; else if (b)
< 0) b = 0; var g = (num & 0x0000FF) + amt; if (g >Else if (g < 0) g = 0; return (usePound? "#": ") + (g | (b)
