Fix frog color translation

core/src/main/java/org/geysermc/geyser/entity/type/living/animal/FrogEntity.java

@@ -54,7 +54,12 @@ public class FrogEntity extends AnimalEntity {
     }
 
     public void setFrogVariant(IntEntityMetadata entityMetadata) {
-        dirtyMetadata.put(EntityData.VARIANT, entityMetadata.getPrimitiveValue());
+        int variant = entityMetadata.getPrimitiveValue();
+        dirtyMetadata.put(EntityData.VARIANT, switch (variant) {
+            case 1 -> 2; // White
+            case 2 -> 1; // Green
+            default -> variant;
+        });
     }
 
     public void setTongueTarget(ObjectEntityMetadata<OptionalInt> entityMetadata) {

core/src/main/java/org/geysermc/geyser/util/MathUtils.java

@@ -110,7 +110,7 @@ public class MathUtils {
      * @param high The high bound of the clamp
      * @return the clamped value
      */
-    public static double clamp(float value, float low, float high) {
+    public static float clamp(float value, float low, float high) {
         if (value < low) {
             return low;
         }