Added method to CardColor to identify if another CardColor shares color with another.

Added method to CardType to identify if another CardType shares a subtype with another.

src/main/java/forge/card/CardColor.java

@@ -300,4 +300,24 @@ public final class CardColor implements Comparable<CardColor> {
     public static void setNullColor(final CardColor nullColor0) {
         CardColor.nullColor = nullColor0;
     }
+    
+    public boolean sharesColorWith(CardColor ccOther) {
+        
+        if (this.isWhite() && ccOther.isWhite())
+            return true;
+        
+        if (this.isBlue() && ccOther.isBlue())
+            return true;
+        
+        if (this.isBlack() && ccOther.isBlack())
+            return true;
+        
+        if (this.isRed() && ccOther.isRed())
+            return true;
+        
+        if (this.isGreen() && ccOther.isGreen())
+            return true;
+        
+        return false;
+    }
 }

src/main/java/forge/card/CardType.java

@@ -296,4 +296,16 @@ public final class CardType implements Comparable<CardType> {
         return this.toString().compareTo(o.toString());
     }
 
+    public List<String> getSubTypes() {
+        return this.subType;
+    }
+    
+    public boolean sharesSubTypeWith(CardType ctOther) {
+        for (String t : ctOther.getSubTypes()) {
+            if (this.subTypeContains(t))
+                return true;
+        }
+        
+        return false;
+    }
 }