I noticed that in Rust, `println!`being a macro, it matched the color of string literals. This was visually confusing to me, so I checked what the nvim catpuccin theme (https://github.com/catppuccin/nvim) does. While it is pretty different, it does use different colors for strings and all function types: https://share.cleanshot.com/RLG2y1
I don't know if blue or red makes more sense given the other syntax choices, but wanted to propose this change cc @IsotoxalDev
