怎么自定义按钮颜色？

let optButtons: OptButton[] = [
    {
        render: 'tipButton',
        name: '修改余额',
        title: '修改余额',
        text: '余额',
        type: 'danger',
        icon: 'fa fa-search-plus',
        class: 'table-row-edit',
        disabledTip: false,

        click: (row: TableRow) => {
            infoButtonClick(row)
        },
    },
]