# volumeUpColor

Candlestick (): the volume bar colours (`auto` = up-color / down-color) and their alpha (default 0.45).

Canonical: https://chart.syidax.com/docs/options/volumeUpColor/

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## Definition

| Item | Value |
| --- | --- |
| JavaScript property | `volumeUpColor` |
| HTML attribute | `volume-up-color` |
| Type | `string` |
| Default | `undefined` |

undefined means this property was not explicitly set. The effective value may depend on the chart type and other settings.

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## Related documentation

A property with the same name may have different types and defaults across charts. When using a direct tag, follow that chart's documentation below.

- [Shared facade and direct tags](https://chart.syidax.com/docs/concepts.md)
- [sy-candlestick-chart](https://chart.syidax.com/docs/components/candlestick.md#property-volumeUpColor)
- [sy-ohlc-chart](https://chart.syidax.com/docs/components/ohlc.md#property-volumeUpColor)