# Setting border and corner attributes for compositing in Amazon Chime SDK meetings
Setting border and corner attributes

As desired, you can use the `VideoAttribute` parameter to specify border and corner settings for your video tiles. You can specify colors, widths, and rounded corners. You can also specify a highlight color, and the border changes to that color when someone speaks. 

Your attribute settings apply to all layouts, regardless of content sharing.

The following image shows a video tile with a border color and corner radius applied.

![\[Image of a screen share and video tile with a red border and rounded corners.\]](http://docs.aws.amazon.com/chime-sdk/latest/dg/images/compositing-speaker-border.png)


The following example shows how to use each attribute. In this case, video tiles have rounded corners with a five-pixel radius. The tiles have a green border, also five pixels wide. When the speaker talks, the `HighlightColor` attribute changes the border color to red.

```
{
   "CompositedVideo":{
      "Layout":"GridView",
      "Resolution":"FHD",
      "GridViewConfiguration":{
         "ContentShareLayout":"ActiveSpeakerOnly",
         "ActiveSpeakerOnlyConfiguration":{
            "ActiveSpeakerPosition":"TopRight"
         }
         "VideoAttribute": {
            "CornerRadius"   : 10,                               
            "BorderColor"    : "Green", 
            "HighlightColor" : "Red",  
            "BorderThickness": 5 
          },      
       }
   }
}
```

**VideoAttribute**  
*Description* – Specifies the settings for video tile borders and rounded corners  
*Allowed values* – `BorderColor` \$1 `BorderThickness` \$1 `CornerRadius` \$1 `HighlightColor`  
*Required* – No

**VideoAttribute.BorderColor**  
*Description* – Defines the border color for all video tiles  
*Allowed values* – Color names, such as Red, Green, or Blue  
*Required* – No

**VideoAttribute.BorderThickness**  
*Description* – Defines the border thickness in pixels for all video tiles  
*Type* – Integer  
*Allowed values* – 1–20  
*Required* – No

**VideoAttribute.CornerRadius**  
*Description* – Defines the corner radius in pixels for all video tiles.   
*Type* – Integer  
*Allowed values* – 1–20  
*Required* – No

**VideoAttribute.HighlightColor**  
*Description* – Defines a border color that appears when a presenter or speaker talks  
*Allowed values* – Color names, such as Red, Green, or Blue  
*Required* – No