I was working until I achieved a theme similar to Facebook Marketplace, I called it Dark Light



This is an image of how the sigma dark light looked


If you wish, you can download the file style.css dark light and replace it with the file you have in sigma
(or rename your style.css file to styleold.css and upload the style.css dark light)

You can download the file from my page
https://infosuriguazu.com/?page_id=26

Here is the address of the style.css file in the sigma theme.
root/public_html/oc-content/themes/sigma/css/style.css

They should rename that file and download the new one from my site.


CSS Dark light SIGMA
------------------------
1. Background #121212
2. Surface #282828
3. Primary #3D3D3D
4. On Surface #eee (H2 Textos)
5. On Surface2 #0D9ECC Turquesa
------------------------

I hope that css has been useful to you   

*Any question.. write me > Whatsapp +54 9 3757 659495

@Gimenez70
Nice work
Attaching there.

this is the new version
The categories section of the main page was modified



!
Download Here the new CSS

Good job, nice work!