function colorShader(a,b){"use strict";if(!isHexColorString(a))return null;var c=parseInt(a,16),d={r:(c>>16)+b,g:(255&c)+b,b:(255&c>>8)+b};d.r>255?d.r=255:0>d.r&&(d.r=0),d.g>255?d.g=255:0>d.g&&(d.g=0),d.b>255?d.b=255:0>d.b&&(d.b=0);var e=(d.r<<16|d.g|d.b<<8).toString(16);return 6===e.length?e:Array(6-e.length+1).join("0")+e}