# Coloring voxels in ROI

**URL:** <https://discourse.slicer.org/t/coloring-voxels-in-roi/6956>\
**Category:** Support\
**Created:** [May 29, 2019, 11:34am UTC](https://discourse.slicer.org/t/coloring-voxels-in-roi/6956 "2019-05-29T11:34:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![11124](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/11124/32/3845_2.png) [@11124](https://discourse.slicer.org/u/11124)\
**Post date:** [May 29, 2019, 11:34am UTC](https://discourse.slicer.org/t/coloring-voxels-in-roi/6956/1 "2019-05-29T11:34:53Z")

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Hi!  
I’m writing python plugin for segmentation, using seed growing algorithm. Now, when i found voxels in ROI region, i just set intensity at -1000. Is there any possibility to color ROI voxels?

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 29, 2019, 11:35am UTC](https://discourse.slicer.org/t/coloring-voxels-in-roi/6956/2 "2019-05-29T11:35:54Z")

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You can assign any colors to any voxel value by creating a custom color node in the Colors module and selecting that for displaying the volume.