POST METADATA COLOUR FIX — Convoa 0.6.31

Fixes dark post dates, the "by" label and the » separator in Night Shift.
Uses the existing light text colour. Username colours and day mode are unchanged.

For an existing installation:
1. Upload ext/minerva/portal/styles/prosilver/template/convoa_dashboard.css.html
   to the matching path in your forum, replacing the existing file.
2. In the Administration Control Panel, General, select Purge the cache.
3. Refresh the forum page (use a hard refresh if needed).

The full ZIP includes the complete supplied software with this fix.
The patch ZIP includes the stylesheet and these instructions only.
