# Transparency by colour

**URL:** <https://community.cesium.com/t/transparency-by-colour/25803>\
**Category:** CesiumJS\
**Created:** [August 2, 2023, 9:23am UTC](https://community.cesium.com/t/transparency-by-colour/25803 "2023-08-02T09:23:53Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![clint](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/clint/32/14898_2.png) [@clint](https://community.cesium.com/u/clint)\
**Post date:** [August 2, 2023, 9:23am UTC](https://community.cesium.com/t/transparency-by-colour/25803/1 "2023-08-02T09:23:53Z")

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Hi, is it possible to create a custom shape to cutout Cesium world terrain? E.g. same as the water in below link.

> **[Cesium Sandcastle](https://sandcastle.cesium.com/?src=Globe%20Interior.html)**
>
> The Cesium Sandcastle provides an interactive environment for testing Cesium code.