1 files changed, 4 insertions, 1 deletions
diff --git a/src/com/fourisland/fourpuzzle/window/SystemGraphic.java b/src/com/fourisland/fourpuzzle/window/SystemGraphic.java
index aa0b593..163f097 100755
--- a/src/com/fourisland/fourpuzzle/window/SystemGraphic.java
+++ b/src/com/fourisland/fourpuzzle/window/SystemGraphic.java

@@ -74,8 +74,11 @@ public class SystemGraphic {
        if (color < 10)
        {
            return systemGraphic.getSubimage(color*16, 48, 16, 16);
+        } else if (color < 20)
+        {
+            return systemGraphic.getSubimage((color-10)*16, 64, 16, 16);
        } else {
-            return systemGraphic.getSubimage(color*16, 64, 16, 16);
+            throw new IllegalArgumentException("Color must be in the range of 0 to 19");
        }
    }