> Setting Hitbox Texture

   1. hitbox.png:
         > White color (#ffffff)
         > Red color (#ff0000)
         > Blue color (#0000ff)
         > Opacity of the brush 210

   2. hitbox_mers.tga:
         > Green color (#00ff00)
              > (0, 32, 0)

         > Blue color color (#0000ff)
              > (0, 16, 0)