Edit in JSFiddle

var colorR = "rgb(87, 186, 255)";
$('#picker').colpick({
    submitText: "Chọn",
    onSubmit: function (hsb, hex, rgb, fromSetColor) {
        var color = "rgb(" + rgb["r"] + ", " + rgb["g"] + ", " + rgb["b"] + ")";
        $("*").css({
            "background-color": function () {
                if (colorR == $(this).css("background-color")) return color
            },
                "color": function () {
                if (colorR == $(this).css("color")) return color
            },
                "border-color": function () {
                if (colorR == $(this).css("border-top-color")) return color
            }
        });
        colorR = color;
    }
});

<div id="test">
    
    <div>text</div>

    <strong>zzbaivong</strong>

    <p>admin</p>

    <a target="_blank" href="http://devs.forumvi.com">DEVs.forumvi.com</a>   
    
</div>
<div id="picker"></div>

#test div {
    background: #57baff;
    height: 20px;
    margin: 10px 0;
    color: #FFF;
}
#test strong, #test a {
    color:#57baff
}
#test p {
    border: 2px solid #57baff;
}
#picker {
    background: url(http://colpick.com/images/wheel.png) no-repeat center/100% transparent;
    width: 30px;
    height: 30px;
    margin-top: 30px;
}