openBSD doesn't have colors for ls

the treasure that adds color to ls should not be used in this case

missions/finding_files_maze/01_ls_cd/treasure-msg.sh

@@ -0,0 +1,14 @@
+if command ls --color >/dev/null 2>/dev/null
+then
+  # standard linux
+  cat "$(eval_gettext '$MISSION_DIR/treasure-msg/en.txt')"
+elif command ls -G >/dev/null 2>/dev/null
+then
+  # freebsd, macOS use another flag for colors: -G
+  cat "$(eval_gettext '$MISSION_DIR/treasure-msg/en.txt')"
+else
+  # openbsd doesn't use colors at all
+  :
+fi
+
+

missions/finding_files_maze/01_ls_cd/treasure.sh

@@ -1,18 +1,23 @@
 # NOTE: --literal doesn't exist in freebsd
-#       --color doesn't exist in macos
-if ls --literal / &> /dev/null
+#       --color doesn't exist in macos, it is replaced by -G
+#       colors do not exist in openbsd!
+#
+if ls --literal &> /dev/null
 then
-  if ls --color=auto / &> /dev/null
+  if ls --color=auto &> /dev/null
   then
     alias ls='ls --literal -p --color=auto'
-  else
+  elif ls -G &> /dev/null
+  then
     alias ls='ls --literal -p -G'
   fi
 else
-  if ls --color=auto / &> /dev/null
+  if ls --color=auto &> /dev/null
   then
+    export COLORTERM=1  # necessary for freeBSD
     alias ls='ls -p --color=auto'
-  else
+  elif ls -G / &> /dev/null
+  then
     alias ls='ls -p -G'
   fi
 fi