theme: Remove default syntax colors (#11980)

This PR removes the default syntax colors from the theme.

With the changes in #11911 these colors could leak through if the theme
didn't provide a value for that syntax color.

Removing them gives themes a clean slate to work with.

Release Notes:

- N/A

crates/theme/src/default_theme.rs

@@ -22,7 +22,7 @@ fn zed_pro_daylight() -> Theme {
             colors: ThemeColors::light(),
             status: StatusColors::light(),
             player: PlayerColors::light(),
-            syntax: Arc::new(SyntaxTheme::light()),
+            syntax: Arc::new(SyntaxTheme::default()),
             accents: vec![
                 blue().light().step_9(),
                 orange().light().step_9(),
@@ -53,7 +53,7 @@ pub(crate) fn zed_pro_moonlight() -> Theme {
             colors: ThemeColors::dark(),
             status: StatusColors::dark(),
             player: PlayerColors::dark(),
-            syntax: Arc::new(SyntaxTheme::dark()),
+            syntax: Arc::new(SyntaxTheme::default()),
             accents: vec![
                 blue().dark().step_9(),
                 orange().dark().step_9(),

crates/theme/src/registry.rs

@@ -118,10 +118,6 @@ impl ThemeRegistry {
             };
             player_colors.merge(&user_theme.style.players);
 
-            let syntax_theme = match user_theme.appearance {
-                AppearanceContent::Light => SyntaxTheme::light(),
-                AppearanceContent::Dark => SyntaxTheme::dark(),
-            };
             let syntax_highlights = user_theme
                 .style
                 .syntax
@@ -141,7 +137,8 @@ impl ThemeRegistry {
                     )
                 })
                 .collect::<Vec<_>>();
-            let syntax_theme = SyntaxTheme::merge(Arc::new(syntax_theme), syntax_highlights);
+            let syntax_theme =
+                SyntaxTheme::merge(Arc::new(SyntaxTheme::default()), syntax_highlights);
 
             let window_background_appearance = user_theme
                 .style

crates/theme/src/styles/syntax.rs

@@ -2,133 +2,12 @@ use std::sync::Arc;
 
 use gpui::{HighlightStyle, Hsla};
 
-use crate::{
-    blue, cyan, gold, indigo, iris, jade, lime, mint, neutral, orange, plum, purple, red, sky,
-    tomato, yellow,
-};
-
 #[derive(Debug, PartialEq, Eq, Clone, Default)]
 pub struct SyntaxTheme {
     pub highlights: Vec<(String, HighlightStyle)>,
 }
 
 impl SyntaxTheme {
-    pub fn light() -> Self {
-        Self {
-            highlights: vec![
-                ("attribute".into(), cyan().light().step_11().into()),
-                ("boolean".into(), tomato().light().step_11().into()),
-                ("comment".into(), neutral().light().step_10().into()),
-                ("comment.doc".into(), iris().light().step_11().into()),
-                ("constant".into(), red().light().step_9().into()),
-                ("constructor".into(), red().light().step_9().into()),
-                ("embedded".into(), red().light().step_9().into()),
-                ("emphasis".into(), red().light().step_9().into()),
-                ("emphasis.strong".into(), red().light().step_9().into()),
-                ("enum".into(), red().light().step_9().into()),
-                ("function".into(), red().light().step_9().into()),
-                ("hint".into(), red().light().step_9().into()),
-                ("keyword".into(), orange().light().step_9().into()),
-                ("label".into(), red().light().step_9().into()),
-                ("link_text".into(), red().light().step_9().into()),
-                ("link_uri".into(), red().light().step_9().into()),
-                ("number".into(), purple().light().step_10().into()),
-                ("operator".into(), red().light().step_9().into()),
-                ("predictive".into(), red().light().step_9().into()),
-                ("preproc".into(), red().light().step_9().into()),
-                ("primary".into(), red().light().step_9().into()),
-                ("property".into(), red().light().step_9().into()),
-                ("punctuation".into(), neutral().light().step_11().into()),
-                (
-                    "punctuation.bracket".into(),
-                    neutral().light().step_11().into(),
-                ),
-                (
-                    "punctuation.delimiter".into(),
-                    neutral().light().step_10().into(),
-                ),
-                (
-                    "punctuation.list_marker".into(),
-                    blue().light().step_11().into(),
-                ),
-                ("punctuation.special".into(), red().light().step_9().into()),
-                ("string".into(), jade().light().step_9().into()),
-                ("string.escape".into(), red().light().step_9().into()),
-                ("string.regex".into(), tomato().light().step_9().into()),
-                ("string.special".into(), red().light().step_9().into()),
-                (
-                    "string.special.symbol".into(),
-                    red().light().step_9().into(),
-                ),
-                ("tag".into(), red().light().step_9().into()),
-                ("text.literal".into(), red().light().step_9().into()),
-                ("title".into(), red().light().step_9().into()),
-                ("type".into(), cyan().light().step_9().into()),
-                ("variable".into(), red().light().step_9().into()),
-                ("variable.special".into(), red().light().step_9().into()),
-                ("variant".into(), red().light().step_9().into()),
-            ],
-        }
-    }
-
-    pub fn dark() -> Self {
-        Self {
-            highlights: vec![
-                ("attribute".into(), tomato().dark().step_11().into()),
-                ("boolean".into(), tomato().dark().step_11().into()),
-                ("comment".into(), neutral().dark().step_11().into()),
-                ("comment.doc".into(), iris().dark().step_12().into()),
-                ("constant".into(), orange().dark().step_11().into()),
-                ("constructor".into(), gold().dark().step_11().into()),
-                ("embedded".into(), red().dark().step_11().into()),
-                ("emphasis".into(), red().dark().step_11().into()),
-                ("emphasis.strong".into(), red().dark().step_11().into()),
-                ("enum".into(), yellow().dark().step_11().into()),
-                ("function".into(), blue().dark().step_11().into()),
-                ("hint".into(), indigo().dark().step_11().into()),
-                ("keyword".into(), plum().dark().step_11().into()),
-                ("label".into(), red().dark().step_11().into()),
-                ("link_text".into(), red().dark().step_11().into()),
-                ("link_uri".into(), red().dark().step_11().into()),
-                ("number".into(), red().dark().step_11().into()),
-                ("operator".into(), red().dark().step_11().into()),
-                ("predictive".into(), red().dark().step_11().into()),
-                ("preproc".into(), red().dark().step_11().into()),
-                ("primary".into(), red().dark().step_11().into()),
-                ("property".into(), red().dark().step_11().into()),
-                ("punctuation".into(), neutral().dark().step_11().into()),
-                (
-                    "punctuation.bracket".into(),
-                    neutral().dark().step_11().into(),
-                ),
-                (
-                    "punctuation.delimiter".into(),
-                    neutral().dark().step_11().into(),
-                ),
-                (
-                    "punctuation.list_marker".into(),
-                    blue().dark().step_11().into(),
-                ),
-                ("punctuation.special".into(), red().dark().step_11().into()),
-                ("string".into(), lime().dark().step_11().into()),
-                ("string.escape".into(), orange().dark().step_11().into()),
-                ("string.regex".into(), tomato().dark().step_11().into()),
-                ("string.special".into(), red().dark().step_11().into()),
-                (
-                    "string.special.symbol".into(),
-                    red().dark().step_11().into(),
-                ),
-                ("tag".into(), red().dark().step_11().into()),
-                ("text.literal".into(), purple().dark().step_11().into()),
-                ("title".into(), sky().dark().step_11().into()),
-                ("type".into(), mint().dark().step_11().into()),
-                ("variable".into(), red().dark().step_11().into()),
-                ("variable.special".into(), red().dark().step_11().into()),
-                ("variant".into(), red().dark().step_11().into()),
-            ],
-        }
-    }
-
     #[cfg(any(test, feature = "test-support"))]
     pub fn new_test(colors: impl IntoIterator<Item = (&'static str, Hsla)>) -> Self {
         Self::new_test_styles(colors.into_iter().map(|(key, color)| {