Background noise and patterns in this page have been dynamically generated in your browser through JavaScript. That's unless your browser doesn't support the canvas element, in which case a fallback image is used. The jQuery plugin noiseGen takes care of all that.
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$("#box1").noiseGen({
opacity: 1,
width: 60,
height: 60,
grainDimension: 1,
bias: 5,
distribution: "bell",
fromColor: "0088c0",
toColor: "10a9cf",
independentChannels: true,
fallbackImage: "blue.png"
});
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$("#box2").noiseGen({
opacity: 1,
width: 120,
height: 80,
grainDimension: {
width: 60,
height: 1
},
fromColor: "777777",
toColor: "BBBBBB",
distribution: 10,
bias: -9,
fallbackImage: "grey.png"
});
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$("#box3").noiseGen({
opacity: 1,
width: 100,
height: 70,
grainDimension: {
width: 10,
height: 1
},
fromColor: "472B00",
toColor: "573700",
distribution: "bell",
bias: 8,
fallbackImage: "brown.png"
});