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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [UserInterfaceTheme](./bitburner.userinterfacetheme.md) &gt; [backgroundprimary](./bitburner.userinterfacetheme.backgroundprimary.md)

## UserInterfaceTheme.backgroundprimary property

**Signature:**

```typescript
backgroundprimary: string;
```