# Population analysis

**URL:** https://discourse.slicer.org/t/population-analysis/40923
**Category:** Support
**Created:** [January 2, 2025, 5:32am UTC](https://discourse.slicer.org/t/population-analysis/40923 "2025-01-02T05:32:22Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![lili-yu22](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@lili-yu22](https://discourse.slicer.org/u/lili-yu22)
#### Post date: [January 2, 2025, 5:32am UTC](https://discourse.slicer.org/t/population-analysis/40923/1 "2025-01-02T05:32:22Z")

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I use the population analysis module in slicersalt5.0.0.I get the PCA mean of the group 1,but the color is always black,no matter I change it to become white .how can I do

 ![IMG_20250102_132404](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/9/f981260c49a3f5e2853cb74768e6be5e9429d60e.jpeg)