[Theme gui] new parameter for the color of marked objects

[Yona-TYT]

This is thought of @hajo, with this you can now choose a more exentrique color for your purple theme.

0001-Add-theme-parameter-object-highlight.patch

[Leartin]

Could you elaborate what marked objects are? Is this what's usually red and also used for highlighting track reserving?

[Yona-TYT]

Could you elaborate what marked objects are? Is this what's usually red and also used for highlighting track reserving?

I think so (although I'm not entirely sure), it's also what highlights the stops/stations when set to schedule.

[Roboron]

I'll merge this in a few days if there are no objections. Where does this need to be documented?

[Yona-TYT]

Wow , good that they remembered this .
@Reboron, it seems like you're reading the forum very carefully looking for "bugs" hahahaha. 

[Roboron]

In r10873 (sorry, I totally forgot to prepend your name to the commit message).

Documented here in the wiki:

=> https://simutrans-germany.com/wiki/wiki/en_ThemeDef?latest=1&page_ref_id=1696#Colors

Please someone with permissions move this to Incorporated!