adding new dark dirt terrain based on regular dirt,

...and slightly tweaking the color of regular dirt.

changelog

@@ -36,6 +36,7 @@ Version 1.9.0-svn:
    * fix for dwarven castle to cave wall alignment issue by Alarantalara
    * improved "desert road" based off the dirt terrain
    * made encampment use normal dirt rather than a custom dirt base
+   * added new Òdark dirtÓ terrain
  * User interface:
    * Added dialog for installation of add-on dependencies
    * Removed the unused gui2 menu bar

data/core/terrain-graphics.cfg

@@ -255,6 +255,7 @@
 {TERRAIN_BASE_RANDOM     Gs                                                        flat/savanna}
 
 {TERRAIN_BASE_RANDOM     Re,Ce,Ke                                                  flat/dirt}
+{TERRAIN_BASE_RANDOM     Rb                                                        flat/dirt-dark}
 
 {TERRAIN_BASE_RANDOM     Rr                                                        flat/road}
 {TERRAIN_BASE_RANDOM     Rp                                                        flat/stone-path}
@@ -554,6 +555,9 @@
 {TRANSITION_BASE_LF    (!,Re)           Re                          -379  transition3  flat/dirt}
 {TRANSITION_BASE_L     Re               (!,Re)                      -380               flat/dirt}
 
+{TRANSITION_BASE_LF    (!,Rb)           Rb                          -384  transition3  flat/dirt-dark}
+{TRANSITION_BASE_L     Rb               (!,Rb)                      -388               flat/dirt-dark}
+
 {TRANSITION_BASE_LF    (!,Chw,Khw,Khs,!,C*,K*)            (Ai,W*)     -480 non_submerged_part castle/castle-to-ice}
 {TRANSITION_BASE_LF    Aa,Ha,Ms,Ai                        (W*,Ss)     -490 non_submerged_part ice}
 {TRANSITION_BASE_LF    Aa,Ha,Ms,Ai                        (W*,Ss)     -505 submerged_part     ice-to-water}

data/core/terrain.cfg

@@ -906,6 +906,15 @@
     editor_group=flat
 [/terrain_type]
 
+[terrain_type]
+    symbol_image=flat/dirt-dark
+    id=dirt_dark
+    name= _ "Dirt"
+    string=Rb
+    aliasof=Gt
+    editor_group=flat
+[/terrain_type]
+
 [terrain_type]
     symbol_image=flat/dirt
     id=dirt
@@ -918,7 +927,7 @@
 [terrain_type]
     symbol_image=flat/desert-road
     id=road
-    name= _ "Road"
+    name= _ "Dirt"
     string=Rd
     aliasof=Gt
     editor_group=desert, flat
@@ -927,7 +936,7 @@
 [terrain_type]
     symbol_image=flat/road
     id=road
-    name= _ "Road"
+    name= _ "Cobbles"
     string=Rr
     aliasof=Gt
     editor_group=flat
@@ -936,7 +945,7 @@
 [terrain_type]
     symbol_image=flat/stone-path
     id=stone_path
-    name= _ "Road"
+    name= _ "Cobbles"
     string=Rp
     aliasof=Gt
     editor_group=flat