diff --git a/vtm/src/org/oscim/theme/styles/AreaStyle.java b/vtm/src/org/oscim/theme/styles/AreaStyle.java
index 1b126279..64f34601 100644
--- a/vtm/src/org/oscim/theme/styles/AreaStyle.java
+++ b/vtm/src/org/oscim/theme/styles/AreaStyle.java
@@ -108,6 +108,7 @@ public class AreaStyle extends RenderStyle<AreaStyle> {
     }
 
     public AreaStyle(AreaBuilder<?> b) {
+        this.cat = b.cat;
         this.level = b.level;
         this.style = b.style;
         this.fadeScale = b.fadeScale;
@@ -195,6 +196,7 @@ public class AreaStyle extends RenderStyle<AreaStyle> {
             if (area == null)
                 return reset();
 
+            this.cat = area.cat;
             this.level = area.level;
             this.style = area.style;
             this.fadeScale = area.fadeScale;
@@ -266,6 +268,7 @@ public class AreaStyle extends RenderStyle<AreaStyle> {
         }
 
         public T reset() {
+            cat = null;
             level = -1;
             fillColor = Color.WHITE;
             strokeColor = Color.BLACK;
diff --git a/vtm/src/org/oscim/theme/styles/CircleStyle.java b/vtm/src/org/oscim/theme/styles/CircleStyle.java
index ea6cb4ad..b5d02b58 100644
--- a/vtm/src/org/oscim/theme/styles/CircleStyle.java
+++ b/vtm/src/org/oscim/theme/styles/CircleStyle.java
@@ -43,6 +43,7 @@ public final class CircleStyle extends RenderStyle<CircleStyle> {
     }
 
     public CircleStyle(CircleBuilder<?> b) {
+        this.cat = b.cat;
         this.radius = b.radius;
         this.scaleRadius = b.scaleRadius;
         this.fillColor = b.themeCallback != null ? b.themeCallback.getColor(b.fillColor) : b.fillColor;
@@ -78,6 +79,7 @@ public final class CircleStyle extends RenderStyle<CircleStyle> {
             this.fillColor = themeCallback != null ? themeCallback.getColor(circle.fillColor) : circle.fillColor;
             this.strokeColor = themeCallback != null ? themeCallback.getColor(circle.strokeColor) : circle.strokeColor;
             this.strokeWidth = circle.strokeWidth;
+            this.cat = circle.cat;
             this.level = circle.level;
 
             return self();
@@ -94,6 +96,7 @@ public final class CircleStyle extends RenderStyle<CircleStyle> {
         }
 
         public T reset() {
+            cat = null;
             level = -1;
             radius = 0;
             scaleRadius = false;
diff --git a/vtm/src/org/oscim/theme/styles/ExtrusionStyle.java b/vtm/src/org/oscim/theme/styles/ExtrusionStyle.java
index 79747227..43b7b941 100644
--- a/vtm/src/org/oscim/theme/styles/ExtrusionStyle.java
+++ b/vtm/src/org/oscim/theme/styles/ExtrusionStyle.java
@@ -44,6 +44,7 @@ public class ExtrusionStyle extends RenderStyle<ExtrusionStyle> {
     }
 
     public ExtrusionStyle(ExtrusionBuilder<?> b) {
+        this.cat = b.cat;
         this.level = b.level;
 
         this.colorSide = b.themeCallback != null ? b.themeCallback.getColor(b.colorSide) : b.colorSide;
@@ -105,6 +106,7 @@ public class ExtrusionStyle extends RenderStyle<ExtrusionStyle> {
             if (extrusion == null)
                 return reset();
 
+            this.cat = extrusion.cat;
             this.level = extrusion.level;
             this.colorSide = themeCallback != null ? themeCallback.getColor(extrusion.colorSide) : extrusion.colorSide;
             this.colorTop = themeCallback != null ? themeCallback.getColor(extrusion.colorTop) : extrusion.colorTop;
@@ -150,6 +152,7 @@ public class ExtrusionStyle extends RenderStyle<ExtrusionStyle> {
         }
 
         public T reset() {
+            cat = null;
             level = -1;
             colorSide = Color.TRANSPARENT;
             colorTop = Color.TRANSPARENT;
diff --git a/vtm/src/org/oscim/theme/styles/LineStyle.java b/vtm/src/org/oscim/theme/styles/LineStyle.java
index 41ee9b03..438b2093 100644
--- a/vtm/src/org/oscim/theme/styles/LineStyle.java
+++ b/vtm/src/org/oscim/theme/styles/LineStyle.java
@@ -104,6 +104,7 @@ public final class LineStyle extends RenderStyle<LineStyle> {
     }
 
     private LineStyle(LineBuilder<?> b) {
+        this.cat = b.cat;
         this.level = b.level;
         this.style = b.style;
         this.width = b.strokeWidth;
@@ -171,6 +172,7 @@ public final class LineStyle extends RenderStyle<LineStyle> {
             if (line == null)
                 return reset();
 
+            this.cat = line.cat;
             this.level = line.level;
             this.style = line.style;
             this.strokeWidth = line.width;
@@ -290,6 +292,7 @@ public final class LineStyle extends RenderStyle<LineStyle> {
         }
 
         public T reset() {
+            cat = null;
             level = -1;
             style = null;
             fillColor = Color.BLACK;
diff --git a/vtm/src/org/oscim/theme/styles/SymbolStyle.java b/vtm/src/org/oscim/theme/styles/SymbolStyle.java
index a5410188..e7315ea2 100644
--- a/vtm/src/org/oscim/theme/styles/SymbolStyle.java
+++ b/vtm/src/org/oscim/theme/styles/SymbolStyle.java
@@ -58,6 +58,8 @@ public final class SymbolStyle extends RenderStyle<SymbolStyle> {
     }
 
     public SymbolStyle(SymbolBuilder<?> b) {
+        this.cat = b.cat;
+
         this.bitmap = b.bitmap;
         this.texture = b.texture;
         this.hash = b.hash;
@@ -105,6 +107,8 @@ public final class SymbolStyle extends RenderStyle<SymbolStyle> {
             if (symbol == null)
                 return reset();
 
+            this.cat = symbol.cat;
+
             this.bitmap = symbol.bitmap;
             this.texture = symbol.texture;
             this.hash = symbol.hash;
@@ -147,6 +151,8 @@ public final class SymbolStyle extends RenderStyle<SymbolStyle> {
         }
 
         public T reset() {
+            cat = null;
+
             bitmap = null;
             texture = null;
             hash = 0;
diff --git a/vtm/src/org/oscim/theme/styles/TextStyle.java b/vtm/src/org/oscim/theme/styles/TextStyle.java
index 7cb96216..d72b9f47 100644
--- a/vtm/src/org/oscim/theme/styles/TextStyle.java
+++ b/vtm/src/org/oscim/theme/styles/TextStyle.java
@@ -47,6 +47,7 @@ public final class TextStyle extends RenderStyle<TextStyle> {
         public int symbolPercent;
 
         public T reset() {
+            cat = null;
             fontFamily = FontFamily.DEFAULT;
             fontStyle = FontStyle.NORMAL;
             style = null;
@@ -150,6 +151,7 @@ public final class TextStyle extends RenderStyle<TextStyle> {
         }
 
         public T from(TextBuilder<?> other) {
+            cat = other.cat;
             fontFamily = other.fontFamily;
             fontStyle = other.fontStyle;
             style = other.style;
@@ -176,6 +178,7 @@ public final class TextStyle extends RenderStyle<TextStyle> {
             if (text == null)
                 return reset();
 
+            this.cat = text.cat;
             this.style = text.style;
             this.textKey = text.textKey;
             this.caption = text.caption;
@@ -202,6 +205,7 @@ public final class TextStyle extends RenderStyle<TextStyle> {
     }
 
     TextStyle(TextBuilder<?> b) {
+        this.cat = b.cat;
         this.style = b.style;
         this.textKey = b.textKey;
         this.caption = b.caption;