---
title: "Theming: Customising Selections"
framework: vue
version: "36.1.0"
---

# Theming: Customising Selections

Control how selected rows and cells appear.

## Row Selections

When [row selection](https://www.ag-grid.com/vue-data-grid/row-selection/) is enabled, you can set the color of selected rows using the `selectedRowBackgroundColor` parameter. If your grid uses alternating row colours we recommend setting this to a semi-transparent colour so that the alternating row colours are visible below it.

```js
const myTheme = themeQuartz.withParams({
    // bright green, 10% opacity
    selectedRowBackgroundColor: 'rgba(0, 255, 0, 0.1)',

    // alternating row colours will be visible through the semi-transparent
    // selection background colour
    oddRowBackgroundColor: '#8881',
});
```

#### Custom Row Selection Colour

```ts
import {
  createApp,
  defineComponent,
  onBeforeMount,
  ref,
  shallowRef,
} from "vue";
import { AgGridVue } from "ag-grid-vue3";
import {
  AllCommunityModule,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  ModuleRegistry,
  RowSelectionOptions,
  Theme,
  enableDevValidations,
  themeQuartz,
} from "ag-grid-community";
import { IOlympicData } from "./interfaces";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([AllCommunityModule]);

const myTheme = themeQuartz.withParams({
  // bright green, 10% opacity
  selectedRowBackgroundColor: "rgba(0, 255, 0, 0.1)",
  // alternating row colors will be visible through the semi-transparent
  // selection background color
  oddRowBackgroundColor: "#8881",
});

const VueExample = defineComponent({
  template: `
        <div style="height: 100%">
                <ag-grid-vue
      style="width: 100%; height: 100%;"
      @grid-ready="onGridReady"
      :columnDefs="columnDefs"
      :theme="theme"
      :rowSelection="rowSelection"
      :defaultColDef="defaultColDef"
      :rowData="rowData"
      @first-data-rendered="onFirstDataRendered"></ag-grid-vue>
        </div>
    `,
  components: {
    "ag-grid-vue": AgGridVue,
  },
  setup(props) {
    const gridApi = shallowRef<GridApi<IOlympicData> | null>(null);
    const columnDefs = ref<ColDef[]>([
      { field: "athlete", minWidth: 170 },
      { field: "age" },
      { field: "country" },
      { field: "year" },
      { field: "date" },
      { field: "sport" },
      { field: "gold" },
      { field: "silver" },
      { field: "bronze" },
      { field: "total" },
    ]);
    const theme = ref<Theme | "legacy">(myTheme);
    const rowSelection = ref<RowSelectionOptions | "single" | "multiple">({
      mode: "multiRow",
    });
    const defaultColDef = ref<ColDef>({
      editable: true,
      filter: true,
    });
    const rowData = ref<IOlympicData[]>(null);

    function onFirstDataRendered(params) {
      params.api.forEachNode((node) => {
        if (
          node.rowIndex === 2 ||
          node.rowIndex === 3 ||
          node.rowIndex === 4 ||
          node.rowIndex === 5 ||
          node.rowIndex === 6
        ) {
          node.setSelected(true);
        }
      });
    }
    const onGridReady = (params: GridReadyEvent) => {
      gridApi.value = params.api;

      const updateData = (data) => {
        rowData.value = data;
      };

      fetch("https://www.ag-grid.com/example-assets/olympic-winners.json")
        .then((resp) => resp.json())
        .then((data) => updateData(data));
    };

    return {
      gridApi,
      columnDefs,
      theme,
      rowSelection,
      defaultColDef,
      rowData,
      onGridReady,
      onFirstDataRendered,
    };
  },
});

const app = createApp(VueExample);
app.mount("#app");
```

[Live example: Custom Row Selection Colour](https://www.ag-grid.com/examples/theming-selections/custom-row-selection-color/vue3)

## Cell Selections

[Cell selections](https://www.ag-grid.com/vue-data-grid/cell-selection/) can be created by clicking and dragging on the grid. Copying from a selection will briefly highlight the range of cells (`^ Ctrl`+`C`). There are several parameters to control the selection and highlight style:

```js
const myTheme = themeQuartz.withParams({
    // colour and style of border around selection
    rangeSelectionBorderColor: 'rgb(193, 0, 97)',
    rangeSelectionBorderStyle: 'dashed',
    // background colour of selection - you can use a semi-transparent colour
    // and it wil overlay on top of the existing cells
    rangeSelectionBackgroundColor: 'rgb(255, 0, 128, 0.1)',
    // colour used to indicate that data has been copied from the cell range
    rangeSelectionHighlightColor: 'rgb(60, 188, 0, 0.3)',

    // alternating row colours will be visible through the semi-transparent
    // selection background colour
    oddRowBackgroundColor: '#8881',
});
```

#### Custom Range Selection Style

```ts
import {
  createApp,
  defineComponent,
  onBeforeMount,
  ref,
  shallowRef,
} from "vue";
import { AgGridVue } from "ag-grid-vue3";
import {
  CellSelectionOptions,
  ColDef,
  ColGroupDef,
  GridApi,
  GridOptions,
  GridReadyEvent,
  ModuleRegistry,
  Theme,
  enableDevValidations,
  themeQuartz,
} from "ag-grid-community";
import { AllEnterpriseModule } from "ag-grid-enterprise";
import { IOlympicData } from "./interfaces";
if (process.env.NODE_ENV !== "production") {
  enableDevValidations();
}

ModuleRegistry.registerModules([AllEnterpriseModule]);

const myTheme = themeQuartz.withParams({
  // color and style of border around selection
  rangeSelectionBorderColor: "rgb(193, 0, 97)",
  rangeSelectionBorderStyle: "dashed",
  // background color of selection - you can use a semi-transparent color
  // and it wil overlay on top of the existing cells
  rangeSelectionBackgroundColor: "rgb(255, 0, 128, 0.1)",
  // color used to indicate that data has been copied form the cell range
  rangeSelectionHighlightColor: "rgb(60, 188, 0, 0.3)",
  // alternating row colors will be visible through the semi-transparent
  // selection background color
  oddRowBackgroundColor: "#8881",
});

const VueExample = defineComponent({
  template: `
        <div style="height: 100%">
                <ag-grid-vue
      style="width: 100%; height: 100%;"
      @grid-ready="onGridReady"
      :theme="theme"
      :columnDefs="columnDefs"
      :defaultColDef="defaultColDef"
      :cellSelection="true"
      :rowData="rowData"></ag-grid-vue>
        </div>
    `,
  components: {
    "ag-grid-vue": AgGridVue,
  },
  setup(props) {
    const gridApi = shallowRef<GridApi<IOlympicData> | null>(null);
    const theme = ref<Theme | "legacy">(myTheme);
    const columnDefs = ref<ColDef[]>([
      { field: "athlete", minWidth: 150 },
      { field: "age", maxWidth: 90 },
      { field: "country", minWidth: 150 },
      { field: "year", maxWidth: 90 },
      { field: "date", minWidth: 150 },
      { field: "sport", minWidth: 150 },
      { field: "gold" },
      { field: "silver" },
      { field: "bronze" },
      { field: "total" },
    ]);
    const defaultColDef = ref<ColDef>({
      flex: 1,
      minWidth: 100,
    });
    const rowData = ref<IOlympicData[]>(null);

    const onGridReady = (params: GridReadyEvent) => {
      gridApi.value = params.api;

      const updateData = (data) => {
        rowData.value = data;
        params.api.addCellRange({
          rowStartIndex: 1,
          rowEndIndex: 5,
          columns: ["age", "country", "year", "date"],
        });
      };

      fetch("https://www.ag-grid.com/example-assets/olympic-winners.json")
        .then((resp) => resp.json())
        .then((data) => updateData(data));
    };

    return {
      gridApi,
      theme,
      columnDefs,
      defaultColDef,
      rowData,
      onGridReady,
    };
  },
});

const app = createApp(VueExample);
app.mount("#app");
```

[Live example: Custom Range Selection Style](https://www.ag-grid.com/examples/theming-selections/custom-range-selection-style/vue3)

### Cell Selection for Integrated Charts

When using [integrated charts](https://www.ag-grid.com/vue-data-grid/integrated-charts/) with cell selections, the grid uses different colors to indicate the purpose of the cell ranges:

- `rangeSelectionChartBackgroundColor` - background color for cells used as chart data
- `rangeSelectionChartCategoryBackgroundColor` - background color for cells used as categories / axis labels