el-radio样式：

/deep/ .el-radio__input .el-radio__inner {
  width: 20px;
  height: 20px;
  position: relative;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border: 1px solid #999;
  border-radius: 0;
  outline: none;
  transition: all 0.3s ease-in-out;
  box-sizing: border-box;
  cursor: pointer;
}

/* 选中后的字体颜色 */
/deep/ .el-radio__input.is-checked+.el-radio__label {
  color: #7e6934 !important;
}

/* 选中后圆圈的背景颜色 */
/deep/ .el-radio__input.is-checked .el-radio__inner {
  background: #7e6934 !important;
  border-color: #7e6934 !important;
}

// 选中后的样式
/deep/ .el-radio__input.is-checked .el-radio__inner::after {
  width: 20px;
  height: 20px;
  display: inline-block;
  visibility: visible;
  padding-left: 0;
  text-align: center;
  content: "✓";
  color: #fff;
  font-size: 10px;
  line-height: 20px;
  border-radius: 0;
  background-color: #88733c;
}

el-input:改变选中时的边框颜色

/deep/.el-input__inner:focus {
  border-color: #88733c
}

el-select：改变选中时的边框、文本颜色

// 选择框选中时的边框颜色
/deep/.el-select .el-input.is-focus .el-input__inner {
  border-color: #88733c !important;
}

//选择框选中又取消时的边框颜色
/deep/.el-select .el-input__inner:focus {
  border-color: #88733c !important;
}

// 选择框选中的文本颜色
.el-select-dropdown__item.selected {
  color: #88733c;
}

设置下拉选择框未选中时的提示文字

<el-select placeholder="月份*"></el-select>