diff --git a/BauSystem_15/src/de/steamwar/bausystem/world/Region_15.java b/BauSystem_15/src/de/steamwar/bausystem/world/Region_15.java
index 020e604..8b29993 100644
--- a/BauSystem_15/src/de/steamwar/bausystem/world/Region_15.java
+++ b/BauSystem_15/src/de/steamwar/bausystem/world/Region_15.java
@@ -21,6 +21,7 @@ package de.steamwar.bausystem.world;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormats;
@@ -29,12 +30,13 @@ import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.transform.AffineTransform;
 import com.sk89q.worldedit.session.ClipboardHolder;
-import org.bukkit.Bukkit;
-
+import com.sk89q.worldedit.world.block.BlockType;
+import com.sk89q.worldedit.world.block.BlockTypes;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.Objects;
+import org.bukkit.Bukkit;
 
 
 class Region_15 {
@@ -70,4 +72,117 @@ class Region_15 {
             return e;
         }
     }
+
+    static void changeColor(Clipboard clipboard, Color color) throws WorldEditException {
+        for (int x = 0; x < clipboard.getDimensions().getX(); x++) {
+            for (int y = 0; y < clipboard.getDimensions().getX(); y++) {
+                for (int z = 0; z < clipboard.getDimensions().getX(); z++) {
+                    BlockVector3 blockPointer = clipboard.getMinimumPoint().add(x, y, z);
+                    clipboard.setBlock(blockPointer, mapColor(clipboard.getFullBlock(blockPointer).getBlockType(), color).getDefaultState().toBaseBlock());
+                }
+            }
+        }
+    }
+
+    private static BlockType mapColor(BlockType original, Color color) {
+        if (original != BlockTypes.YELLOW_CONCRETE && original != BlockTypes.YELLOW_STAINED_GLASS) {
+            return original;
+        }
+
+        switch (color) {
+            case WHITE:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.WHITE_CONCRETE;
+                } else {
+                    return BlockTypes.WHITE_STAINED_GLASS;
+                }
+            case ORANGE:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.ORANGE_CONCRETE;
+                } else {
+                    return BlockTypes.ORANGE_STAINED_GLASS;
+                }
+            case MAGENTA:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.MAGENTA_CONCRETE;
+                } else {
+                    return BlockTypes.MAGENTA_STAINED_GLASS;
+                }
+            case LIGHT_BLUE:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.LIGHT_BLUE_CONCRETE;
+                } else {
+                    return BlockTypes.LIGHT_BLUE_STAINED_GLASS;
+                }
+            case LIME:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.LIME_CONCRETE;
+                } else {
+                    return BlockTypes.LIME_STAINED_GLASS;
+                }
+            case PINK:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.PINK_CONCRETE;
+                } else {
+                    return BlockTypes.PINK_STAINED_GLASS;
+                }
+            case GRAY:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.GRAY_CONCRETE;
+                } else {
+                    return BlockTypes.GRAY_STAINED_GLASS;
+                }
+            case LIGHT_GRAY:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.LIGHT_GRAY_CONCRETE;
+                } else {
+                    return BlockTypes.LIGHT_GRAY_STAINED_GLASS;
+                }
+            case CYAN:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.CYAN_CONCRETE;
+                } else {
+                    return BlockTypes.CYAN_STAINED_GLASS;
+                }
+            case PURPLE:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.PURPLE_CONCRETE;
+                } else {
+                    return BlockTypes.PURPLE_STAINED_GLASS;
+                }
+            case BLUE:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.BLUE_CONCRETE;
+                } else {
+                    return BlockTypes.BLUE_STAINED_GLASS;
+                }
+            case BROWN:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.BROWN_CONCRETE;
+                } else {
+                    return BlockTypes.BROWN_STAINED_GLASS;
+                }
+            case GREEN:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.GREEN_CONCRETE;
+                } else {
+                    return BlockTypes.GREEN_STAINED_GLASS;
+                }
+            case RED:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.RED_CONCRETE;
+                } else {
+                    return BlockTypes.RED_STAINED_GLASS;
+                }
+            case BLACK:
+                if (original == BlockTypes.YELLOW_CONCRETE) {
+                    return BlockTypes.BLACK_CONCRETE;
+                } else {
+                    return BlockTypes.BLACK_STAINED_GLASS;
+                }
+            case YELLOW:
+            default:
+                return original;
+        }
+    }
 }