Whenever I try to print pages on the forum, I get a grey background, see the below example:

The cause is that http://forum.mikrotik.com/styles/Mobbern3.1/theme/color-theme-slate.css overwrites the print media settings in http://forum.mikrotik.com/styles/Mobbern3.1/theme/print.css?assets_version=33
This is the part that overwrites it:
/* primary-color-darkest */
html, #page-footer, #simple-wrap .copyright, .carousel .item {
background-color: #373d4e; }
Please have that fixed:
- In http://forum.mikrotik.com/styles/Mobbern3.1/theme/print.css?assets_version=33 force a background colour for html
- Ensure that http://forum.mikrotik.com/styles/Mobbern3.1/theme/print.css?assets_version=33 gets higher priority than the theming.
Alternatively (since the html colours seem to be overwritten everywhere in the non-print CSS):
- yank the
background-color: #373d4e;from the themes.
–jeroen