[Feature Request] Title

[taekyoong]

What problem does this feature solve?

Hello.
I am running a shopping mall using vant.
I have a question, so I wrote it.

How can I change the background color of each(van-grid-item)?
I've tried using type (danger,warning etc).
But onnly apply CSS in theme.less

@grid-item-content-padding: @padding-md @padding-xs;
@grid-item-content-background-color: @white;
@grid-item-content-active-color: @active-color;
@grid-item-icon-size: 28px;
@grid-item-text-color: @Gray-7;
@grid-item-text-font-size: @font-size-sm;

I need your help.
Thanks for reading my text.

What does the proposed API look like?

  <van-grid v-else-if="product1.stat === 1" direction="horizontal" :column-num="2" clickable type="danger">
    <van-grid-item @click="updateProductStatus(2)" type="danger">
      <gz-text block type="medium">change</gz-text>
    </van-grid-item>
    <van-grid-item @click="hideProduct(false)">
      <gz-text block type="medium">hide</gz-text>
    </van-grid-item>
  </van-grid>