# Why are the cells with reversed normal always black even the Backface property got set?

**URL:** https://discourse.vtk.org/t/why-are-the-cells-with-reversed-normal-always-black-even-the-backface-property-got-set/11003
**Category:** Support
**Created:** [March 18, 2023, 4:50am UTC](https://discourse.vtk.org/t/why-are-the-cells-with-reversed-normal-always-black-even-the-backface-property-got-set/11003 "2023-03-18T04:50:18Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Paulo\_Carvalho](https://discourse.vtk.org/user_avatar/discourse.vtk.org/paulo_carvalho/32/370_2.png) [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [March 19, 2023, 2:36pm UTC](https://discourse.vtk.org/t/why-are-the-cells-with-reversed-normal-always-black-even-the-backface-property-got-set/11003/3 "2023-03-19T14:36:06Z")

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Hello,

Please, take a look at this: [Is it possible to set the different color for front/back face of a cell?](https://discourse.vtk.org/t/is-it-possible-to-set-the-different-color-for-front-back-face-of-a-cell/10947)

take care,

PC

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