If you use a black website background, store font and navigation colours might not be visible. To correct that:

1. Go to your Ecwid account and click on "design"  in the left panel

2. Scroll to the bottom on the page and then click on "Create Theme". 

3. Click "New-CSS Design" and name it ex. Dark Theme.

4. Paste this code: 

.ec-store * {

        color: #fff !important;


5. Click "Activate" and "Save"  - Done! 

*make sure that the color adaptation is enabled.