diff --git a/src/main/java/dan200/computercraft/api/turtle/ITurtleAccess.java b/src/main/java/dan200/computercraft/api/turtle/ITurtleAccess.java
index 0e207f076..c6019a916 100644
--- a/src/main/java/dan200/computercraft/api/turtle/ITurtleAccess.java
+++ b/src/main/java/dan200/computercraft/api/turtle/ITurtleAccess.java
@@ -117,31 +117,12 @@ public interface ITurtleAccess
      */
     void setSelectedSlot( int slot );
 
-    /**
-     * Sets the colour of the turtle, as if the player had dyed it with a dye item.
-     *
-     * @param dyeColour 0-15 to dye the turtle one of the 16 standard Minecraft <em>dye</em> colours, or -1 to remove
-     *                  the dye from the turtle.
-     * @see #getDyeColour()
-     * @see #setColour(int)
-     */
-    void setDyeColour( int dyeColour );
-
-    /**
-     * Gets the colour the turtle has been dyed.
-     *
-     * @return 0-15 if the turtle has been dyed one of the 16 standard Minecraft <em>dye</em> colours, -1 if the turtle
-     * is clean or has no corresponding dye.
-     * @see #setDyeColour(int)
-     * @see #getColour()
-     */
-    int getDyeColour();
-
     /**
      * Set the colour of the turtle to a RGB number.
      *
      * @param colour The colour this turtle should be changed to. This should be a RGB colour between {@code 0x000000}
      *               and {@code 0xFFFFFF} or -1 to reset to the default colour.
+     * @see #getColour()
      */
     void setColour( int colour );
 
@@ -150,6 +131,7 @@ public interface ITurtleAccess
      *
      * @return The colour this turtle is. This will be a RGB colour between {@code 0x000000} and {@code 0xFFFFFF} or
      * -1 if it has no colour.
+     * @see #setColour(int)
      */
     int getColour();
 
diff --git a/src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java b/src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java
index 66059d782..05a31b2ea 100644
--- a/src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java
+++ b/src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java
@@ -113,7 +113,6 @@ public class TurtleBrain implements ITurtleAccess
 
     private int m_selectedSlot;
     private int m_fuelLevel;
-    private Colour m_colour;
     private int m_colourHex;
     private ResourceLocation m_overlay;
 
@@ -136,7 +135,6 @@ public class TurtleBrain implements ITurtleAccess
 
         m_selectedSlot = 0;
         m_fuelLevel = 0;
-        m_colour = null;
         m_colourHex = -1;
         m_overlay = null;
 
@@ -217,7 +215,6 @@ public class TurtleBrain implements ITurtleAccess
         }
 
         // Read colour
-        m_colour = ColourUtils.getColour( nbttagcompound );
         m_colourHex = ColourUtils.getHexColour( nbttagcompound );
 
         // Read overlay
@@ -317,11 +314,7 @@ public class TurtleBrain implements ITurtleAccess
         }
 
         // Write colour
-        if( m_colour != null )
-        {
-            nbttagcompound.setInteger( "colourIndex", m_colour.ordinal() );
-        }
-        else if( m_colourHex != -1 )
+        if( m_colourHex != -1 )
         {
             nbttagcompound.setInteger( "colour", m_colourHex );
         }
@@ -380,11 +373,7 @@ public class TurtleBrain implements ITurtleAccess
         }
 
         // Colour
-        if( m_colour != null )
-        {
-            nbttagcompound.setInteger( "colourIndex", m_colour.ordinal() );
-        }
-        else if( m_colourHex != -1 )
+        if( m_colourHex != -1 )
         {
             nbttagcompound.setInteger( "colour", m_colourHex );
         }
@@ -440,7 +429,6 @@ public class TurtleBrain implements ITurtleAccess
 
         // Colour
         m_colourHex = ColourUtils.getHexColour( nbttagcompound );
-        m_colour = ColourUtils.getColour( nbttagcompound );
 
         // Overlay
         if( nbttagcompound.hasKey( "overlay_mod" ) && nbttagcompound.hasKey( "overlay_path" ) )
@@ -771,12 +759,6 @@ public class TurtleBrain implements ITurtleAccess
         m_owner.updateBlock();
     }
 
-    @Override
-    public int getDyeColour()
-    {
-        return m_colour != null ? m_colour.ordinal() : -1;
-    }
-
     public ResourceLocation getOverlay()
     {
         return m_overlay;
@@ -791,18 +773,23 @@ public class TurtleBrain implements ITurtleAccess
         }
     }
 
-    @Override
+    public int getDyeColour()
+    {
+        if( m_colourHex == -1 ) return -1;
+        Colour colour = Colour.fromHex( m_colourHex );
+        return colour == null ? -1 : colour.ordinal();
+    }
+
     public void setDyeColour( int dyeColour )
     {
-        Colour newColour = null;
+        int newColour = -1;
         if( dyeColour >= 0 && dyeColour < 16 )
         {
-            newColour = Colour.values()[ dyeColour ];
+            newColour = Colour.values()[ dyeColour ].getHex();
         }
-        if( m_colour != newColour )
+        if( m_colourHex != newColour )
         {
-            m_colour = newColour;
-            m_colourHex = newColour == null ? -1 : newColour.getHex();
+            m_colourHex = newColour;
             m_owner.updateBlock();
         }
     }
@@ -815,14 +802,12 @@ public class TurtleBrain implements ITurtleAccess
             if( m_colourHex != colour )
             {
                 m_colourHex = colour;
-                m_colour = Colour.fromHex( colour );
                 m_owner.updateBlock();
             }
         }
         else if( m_colourHex != -1 )
         {
             m_colourHex = -1;
-            m_colour = null;
             m_owner.updateBlock();
         }
     }