diff --git a/blockidentifier.cpp b/blockidentifier.cpp
index 36cb60b6..6b13eb51 100644
--- a/blockidentifier.cpp
+++ b/blockidentifier.cpp
@@ -9,7 +9,7 @@
 static BlockInfo unknownBlock;
 
 BlockInfo::BlockInfo() : transparent(false), liquid(false), rendernormal(true),
-  providepower(false), spawninside(false) {}
+  providepower(false), spawninside(false), grass(false), foliage(false) {}
 
 bool BlockInfo::isOpaque() {
   return !(this->transparent);
@@ -51,10 +51,8 @@ void BlockInfo::setName(const QString & newname) {
   halfslab = this->name.contains("Slab") && !this->name.contains("Double") &&
       !this->name.contains("Full");
   snow = this->name.contains("Snow");
-  // precompute biome based colors
+  // precompute biome based watercolormodifier
   water = this->name.contains("Water");
-  grass = this->name.compare("Grass", Qt::CaseInsensitive) == 0;
-  foliage = false;
 }
 
 const QString & BlockInfo::getName() { return name; }
@@ -70,6 +68,8 @@ bool BlockInfo::biomeWater()   { return water; }
 bool BlockInfo::biomeGrass()   { return grass; }
 bool BlockInfo::biomeFoliage() { return foliage; }
 
+void BlockInfo::setBiomeGrass(bool value)   { grass = value; }
+void BlockInfo::setBiomeFoliage(bool value) { foliage = value; }
 
 BlockIdentifier::BlockIdentifier() {
   // clear cache pointers
@@ -257,6 +257,13 @@ void BlockIdentifier::parseDefinition(JSONObject *b, BlockInfo *parent,
                             255*block->alpha );
   }
 
+  // biome dependant color
+  if (b->has("biomeGrass"))
+    block->setBiomeGrass( b->at("biomeGrass")->asBool() );
+  if (b->has("biomeFoliage"))
+    block->setBiomeFoliage( b->at("biomeFoliage")->asBool() );
+
+  // variant reduction mask
   if (b->has("mask"))
     block->mask = b->at("mask")->asNumber();
   else if (b->has("variants"))
diff --git a/blockidentifier.h b/blockidentifier.h
index ebf6b037..3ac9ac55 100644
--- a/blockidentifier.h
+++ b/blockidentifier.h
@@ -11,17 +11,12 @@
 class JSONArray;
 class JSONObject;
 
-// bit masks for the flags
-#define BlockTransparent 1
-#define BlockSolid 2
-#define BlockLiquid 4
-
-// mobs can't spawn on transparent, but need 2 blocks of transparent,
-// non solid, non liquid above
 
 class BlockInfo {
  public:
   BlockInfo();
+
+  // special block attribute used during mob spawning detection
   bool isOpaque();
   bool isLiquid();
   bool doesBlockHaveSolidTopSurface(int data);
@@ -29,7 +24,7 @@ class BlockInfo {
   bool renderAsNormalBlock();
   bool canProvidePower();
 
-  // special blocks used during mob spawning detection
+  // special block type used during mob spawning detection
   bool isBedrock();
   bool isHopper();
   bool isStairs();
@@ -42,6 +37,8 @@ class BlockInfo {
   bool biomeFoliage();
 
   void setName(const QString &newname);
+  void setBiomeGrass(bool value);
+  void setBiomeFoliage(bool value);
   const QString &getName();
 
   int id;
diff --git a/definitions/readme.txt b/definitions/readme.txt
index 17a30548..25131329 100755
--- a/definitions/readme.txt
+++ b/definitions/readme.txt
@@ -57,9 +57,30 @@ deobfuscated 1.8.x code is not available.
 
 
 
-Other special attribute value pairs in this file:
+Other attribute value pairs in this file:
 
-"mask": number
+"id": integer_number
+
+Numerical code used in the savegame for this block
+
+
+"name": "Name of Block"
+
+String representation of this Block, shown in status bar when hovering mouse over
+
+
+"color": "#ffffff"
+
+Color usedd for rendering this block
+
+
+"alpha": float_number
+
+In case the block is transparent (e.g. water) this defines the amount it coveres
+the block below. 0.0 is completely transparent. 1.0 is the default, a opaque block.
+
+
+"mask": integer_number
 
 In case a block has variants a mask can be given to blend out bits in the data
 field that are not used to define the block itself. These bits are mostely used
@@ -68,5 +89,16 @@ to define block orientation.
  if a block has some variants defined, "mask": 15 is predefined
 
 
+"biomeGrass": boolean
+
+When color of block is changing based on Biome and is based on the Grass Colorizer,
+this flag has to be set true. Defaults to false.
+
+
+"biomeFoliage": boolean
+
+When color of block is changing based on Biome and is based on the Foliage Colorizer,
+this flag has to be set true. Defaults to false.
+
 
 [EtlamGit]
\ No newline at end of file
diff --git a/definitions/vanilla_ids.json b/definitions/vanilla_ids.json
index b7fd11e3..0f5e5d98 100755
--- a/definitions/vanilla_ids.json
+++ b/definitions/vanilla_ids.json
@@ -1,7 +1,7 @@
 {
   "name": "Vanilla",
   "type": "block",
-  "version": "1.11.16w39a",
+  "version": "1.11.16w40a",
   "data": [
     {
       "id": 0,
@@ -51,7 +51,8 @@
     {
       "id": 2,
       "name": "Grass",
-      "color": "#78bf64"
+      "color": "#939393",
+      "biomeGrass": true
     },
     {
       "id": 3,
@@ -358,12 +359,14 @@
         {
           "data": 1,
           "name": "Tall Grass",
-          "color": "#83bf54"
+          "color": "#909090",
+          "biomeGrass": true
         },
         {
           "data": 2,
           "name": "Fern",
-          "color": "#8fbb64"
+          "color": "#828282",
+          "biomeGrass": true
         }
       ]
     },
@@ -942,9 +945,10 @@
     {
       "id": 83,
       "name": "Sugar Cane",
-      "color": "#aadb74",
+      "color": "#97c06b",
       "spawninside": true,
-      "transparent": true
+      "transparent": true,
+      "biomeGrass": true
     },
     {
       "id": 84,
@@ -2200,12 +2204,14 @@
         {
           "data": 2,
           "name": "Double Tallgrass",
-          "color": "#5e8328"
+          "color": "#969696",
+          "biomeGrass": true
         },
         {
           "data": 3,
           "name": "Large Fern",
-          "color": "#617b2d"
+          "color": "#828282",
+          "biomeGrass": true
         },
         {
           "data": 4,