Useful Links

Materials

Material (Spigot-API 1.21.9-R0.1-SNAPSHOT API)hub.spigotmc.org

Particles

Particle (Spigot-API 1.21.9-R0.1-SNAPSHOT API)hub.spigotmc.org

Fireworks

FireworkEffect.Type (Spigot-API 1.21.9-R0.1-SNAPSHOT API)hub.spigotmc.org

Sounds

Sound (Spigot-API 1.21.9-R0.1-SNAPSHOT API)hub.spigotmc.org

Chat Colors

ChatColor (Spigot-API 1.21.9-R0.1-SNAPSHOT API)hub.spigotmc.org

Color Codes

Minecraft Color CodesHTML Color Codes

RGB Colors

W3Schools.comwww.w3schools.com