mui-badge-royal/mui-badge-purple

Mui.css （v3.0.0）部分源码：

1826
.mui-badge-royal, .mui-badge-purple
{
    color: #fff;
    background-color: #8a6de9;
}
.mui-badge-royal.mui-badge-inverted, .mui-badge-purple.mui-badge-inverted
{
    color: #8a6de9;
    background-color: transparent;
}