[ticket/11368] Fix background color for PM report rows by using accessing var.

PHPBB3-11368
Merge remote-tracking branch 'remotes/bantu/ticket/11368' into develop-olympus

# By Andreas Fischer
# Via Andreas Fischer
* remotes/bantu/ticket/11368:
  [ticket/11368] Fix background color for PM report rows by using accessing var.
Merge remote-tracking branch 'remotes/upstream/develop-olympus' into develop

# By Andreas Fischer
# Via Andreas Fischer (1) and Nathaniel Guse (1)
* remotes/upstream/develop-olympus:
  [ticket/11368] Fix background color for PM report rows by using accessing var.