Anyone knows how to make the ¨lock¨ blue?

So i can play Metroid. Help will be hugely appreciated.

If you could only have 10 ds videogames (and only 10) what would be your games list? You can pick games that arent yet on stores but are already announced.

1 Metroid Prime Hunters6 Dementium the Ward

2 Crash of the Titans 7 The legend of Zelda Phantom Hourglass

3 Ninja Gaiden Dragon Sword 8 Pokemon Diamond

4 Resident Evil Deadly Silence9 Jackass

5 Megaman Star Force Pegasus10 The Dark Knight ( Batman Begins 2)