Add required rule for semantic highlighting to the default color schemes

ColorSchemes/Breakers.sublime-color-scheme

@@ -0,0 +1,8 @@
+{
+    "rules": [
+        {
+            "scope": "meta.semantic-token",
+            "background": "#00000001"
+        }
+    ]
+}

ColorSchemes/Celeste.sublime-color-scheme

@@ -0,0 +1,8 @@
+{
+    "rules": [
+        {
+            "scope": "meta.semantic-token",
+            "background": "#00000001"
+        }
+    ]
+}

ColorSchemes/Mariana.sublime-color-scheme

@@ -0,0 +1,8 @@
+{
+    "rules": [
+        {
+            "scope": "meta.semantic-token",
+            "background": "#00000001"
+        }
+    ]
+}

ColorSchemes/Monokai.sublime-color-scheme

@@ -0,0 +1,8 @@
+{
+    "rules": [
+        {
+            "scope": "meta.semantic-token",
+            "background": "#00000001"
+        }
+    ]
+}

ColorSchemes/Sixteen.sublime-color-scheme

@@ -0,0 +1,8 @@
+{
+    "rules": [
+        {
+            "scope": "meta.semantic-token",
+            "background": "#00000001"
+        }
+    ]
+}

LSP.sublime-settings

@@ -106,8 +106,9 @@
   "diagnostics_gutter_marker": "dot",
 
   // Enable semantic highlighting in addition to standard syntax highlighting (experimental!).
-  // Note: Must be supported by the language server and also requires a special rule
-  // in the color scheme to work. Please see the documentation under
+  // Note: Must be supported by the language server and also requires a special rule in the
+  // color scheme to work. If you use none of the built-in color schemes from Sublime Text,
+  // please see the documentation under
   //   https://lsp.sublimetext.io/customization/#semantic-highlighting
   // for a description about how to configure your color scheme for semantic highlighting.
   "semantic_highlighting": false,

docs/src/customization.md

@@ -80,7 +80,8 @@ The following tables give an overview about the scope names used by LSP.
     Language servers which support semantic highlighting are for example *clangd* and *rust-analyzer*.
 
 In order to support semantic highlighting, the color scheme requires a special rule with a background color set for semantic tokens, which is (marginally) different from the original background.
-To add such a rule to your color scheme, select `UI: Customize Color Scheme` from the Command Palette and add for example the following code:
+LSP automatically adds such a rule to the built-in color schemes from Sublime Text.
+If you use a custom color scheme, select `UI: Customize Color Scheme` from the Command Palette and add for example the following code:
 
 ```json
 {