var colors = ["#ff2e99", "#ff8a2d", "#ffe12a", "#caff2a", "#1fb5ff", "#5931ff", "#b848ff"]

function colorize(text) {
    var colorized = ""
    var bracket_color = ""
    for (i = 0; i < text.length; i++) {
        var index = Math.floor(Math.random()*7)
        if (text[i] == "(")
            bracket_color = colors[index]
            color = (bracket_color.length && (text[i] == "(" || text[i] == ")")) ? bracket_color : colors[index]//取色
      colorized = colorized + '<span style="color: '+color+' !important">' + text.charAt(i) + '</span>' //重构
  }
    return colorized
}