Vanilla, no mods needed
Changes the staff part of every with riptide(any level) enchanted trident to a dark prismarine* color both in the inventory and in the players hand (first and third person)
high contrast version here: https://modrinth.com/resourcepack/riptide-trident-high-contrast
Feel free to contact me for other color/model ideas
*not exactly the colors of dark prismarine because they are too similar to the normal texture