Revised the Nostalgia and Nostalgia Blues themes.
- Shaded the bricks in the Nostalgia as in the Blues theme.
- The enemy in Nostalgia brings the gold on his back instead of in his hand.
- Nostalgia Blues now has its own actors file; the enemy graphic is identical for the enemy and the enemy-with-gold sprites. The reference game did not show which enemies had the gold, so this is for truely nostalgic players! :)