.blue{
      background: #1E90FF;
    }
    .gold {
        background: #DAA520;
    }
    .green{
      background: #228B22;
    }
    .grey {
        background: #778899;
    }
    .yellow {
        background: #FFFF00;
    }
    .orange {
        background: #FFA500;
    }
    .white {
        background: #FFFAF0; 
    }
    .black {
        background: #000;
    }
    .brown {
        background: #A0522D;
    }
    .naturale {
        background: #EEE8AA;
    }
    .honey {
        background: #E9AB17;
    }
    .rainbow {
        background: linear-gradient(45deg, red, orange, yellow, green, blue, indigo, violet, red);
    }