New features:
• Per-color permissions added: perfglow.color.(color) for each glow color (e.g. perfglow.color.red, perfglow.color.blue). Granting a permission unlocks that color in the GUI so players can use it without purchasing.
• All 14 color permissions are defined in plugin.yml (dark_red, red, gold, yellow, lime, green, aqua, cyan, blue, light_blue, dark_purple, pink, white, gray) with default false; perfglow.color.* still unlocks all colors.
Bug fixes:
• Fixed UnsupportedOperationException when selecting a glow color in the GUI on Folia; scoreboard updates now run on the player's region so the glow applies correctly
