# Background colours

### Business hours - Grey/White backgrounds

<figure><picture><source srcset="/files/penO7mr2q3QV0ut3E0k8" media="(prefers-color-scheme: dark)"><img src="/files/3o6YLjuBVoFZeYpQNmqI" alt="Details chart business hours"></picture><figcaption></figcaption></figure>

By default, the chart shows non-business hours with a vertical grey background and business hours with a vertical white background on day and week views. Business hours are not shown on a month view. Toggle off to show alternate horizontal grey and white background areas.

Business hours are the time periods (to the nearest hour) that a business is operational. Highlight uses business hours when displaying charts on the Details page, filtering reporting results and generating alerts. Default values are 06:00 to 18:00 Monday through Friday with Saturday and Sunday excluded. However, you may see different settings if the business hours on a parent folder or location have been changed. Business hours reflect the local time zone for the location.

Find out more about [business hours.](https://support.highlight.net/help/admin/business_hours)

### Maintenance periods - Purple backgrounds

<figure><picture><source srcset="/files/gWAszIAIlIOHbslSHUaR" media="(prefers-color-scheme: dark)"><img src="/files/n3N4zGO6KxdI0pJ7R1n7" alt="Maintenance periods on charts"></picture><figcaption></figcaption></figure>

Any purple background areas on the chart show current and past maintenance periods. Watches in maintenance do not send alerts, change the colour of heat tiles or decrement the availability figure for the time period.

Find out more about [maintenance indicators on the details page](/details/details-page-options/maintenance-indicators.md).


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