Stormilla

Some small fixes

• fixed hud not using stormilla textures when using dark mode via respackopts
• fixed gamemode switcher not using dark textures when respackopts dark is on
• fixed fishing hook not being updated with other iron stuff
• fixed 2D corner rail using old iron palette
• fixed miscolored pixels on double chest texture
• ghast shooting face tweaked to look angrier
• changed respackopts dark mode implementation (makes file size slightly smaller)