.blue {
    background: #2196F3;
    color: #fff;
}

.light-blue {
    background: #039BE5;
    color: #fff;
}

.red {
    background: #F44336;
    color: #fff;
}

.indigo {
    background: #3F51B5;
    color: #fff;
}

.teal {
    background: #009688;
    color: #fff;
}

.gray {
    background: #78909C;
    color: #fff;
}

.yellow {
    background: #FDD835;
    color: #fff;
}

.green {
    background: #43A047;
    color: #fff;
}