问jQuery如何用RGB制作调色板？

EN

var divs = $('div'),
    len = divs.length;

var targ_R = 227,
    targ_G = 151,
    targ_B = 4,

    inc_R = (255 - targ_R) / len,
    inc_G = (255 - targ_G) / len,
    inc_B = (255 - targ_B) / len;

divs.css("backgroundColor", function(i, curr) {
    return "#" + toHex(255 - (i * inc_R)) +
                 toHex(255 - (i * inc_G)) +
                 toHex(255 - (i * inc_B));
});

function toHex(n) {
    var h = (~~n).toString(16);
    if (h.length < 2)
        h = "0" + h;
    return h;
}

var r, g, b;

for (var i = 0, count = $("div").length; i < count; i++) {
    r = 255 - i * 3;
    g = 255 - i * 10;
    b = 255 - i * 25;

    $("div").eq(i).css("background", "rgb(" + r + ", " + g + ", " + b + ")");
}

var color0 = pusher.color('white');
var color1 = pusher.color('rgb', 227, 151, 4);

for (var i = 0, count = $("div").length; i < count; i++) {
    var amount = i / (count-1);
    var result = color0.blend(color1, amount);
    $("div").eq(i).css("background", result.html());
}