# fillAlpha

> Returns or specifies the opacity to use when rendering fill shapes for the range of motion for each axis. Defaults to 0.1.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.IMGUI.Controls](/engine/6000.5/script-reference/unityeditor/imgui/controls.md)
* **Assembly:** UnityEditor

```csharp
public float fillAlpha { get; set; }
```

### Remarks

This value is multiplied with the value of the color for the axis being drawn, which is multiplied with the value of [Handles.color](/engine/6000.5/script-reference/unityeditor/handles/color.md).

Additional Resources: [JointAngularLimitHandle.xHandleColor](/engine/6000.5/script-reference/unityeditor/imgui/controls/jointangularlimithandle/xhandlecolor.md), [JointAngularLimitHandle.yHandleColor](/engine/6000.5/script-reference/unityeditor/imgui/controls/jointangularlimithandle/yhandlecolor.md), [JointAngularLimitHandle.zHandleColor](/engine/6000.5/script-reference/unityeditor/imgui/controls/jointangularlimithandle/zhandlecolor.md), [JointAngularLimitHandle.wireframeAlpha](/engine/6000.5/script-reference/unityeditor/imgui/controls/jointangularlimithandle/wireframealpha.md).