Currently, if a number shows up once in the final result and you guess it in all four spots, you'll get 1 blue and 3 gray results. But if it shows up twice, you'll get 2 blue and 2 YELLOW results, which is rather confusing. While being able to get both yellow and blue results makes sense (one's right, one isn't), the incorrect ones should be gray once all correct ones have been found, regardless of how many there are.
Example:
Code: 1123
Guess: 1111 -> Should be BBGG
Guess 1212 -> Should be BYYY
Guess 9911 -> Should be GGYY
