diff --git a/src/main.ts b/src/main.ts
index 6d9f25c..18b5b75 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -3,7 +3,7 @@ import { examples } from "./examples/excerpts";
 import { EditorState, Compartment } from "@codemirror/state";
 import { ViewUpdate, lineNumbers, keymap } from "@codemirror/view";
 import { javascript } from "@codemirror/lang-javascript";
-import { materialDark } from "./themes/materialDark";
+import { toposTheme } from "./themes/toposTheme";
 import { markdown } from "@codemirror/lang-markdown";
 import { Extension, Prec } from "@codemirror/state";
 import { indentWithTab } from "@codemirror/commands";
@@ -254,7 +254,7 @@ export class Editor {
       this.fontSize.of(fontModif),
       this.vimModeCompartment.of(vimPlugin),
       editorSetup,
-      materialDark,
+      toposTheme,
       this.chosenLanguage.of(javascript()),
       EditorView.updateListener.of((v: ViewUpdate) => {
         v;
diff --git a/src/themes/materialDark.ts b/src/themes/toposTheme.ts
similarity index 96%
rename from src/themes/materialDark.ts
rename to src/themes/toposTheme.ts
index 34be29b..5838d02 100644
--- a/src/themes/materialDark.ts
+++ b/src/themes/toposTheme.ts
@@ -49,11 +49,10 @@ const invalid = base_red,
   highlightBackground = "#545b61",
   background = base00,
   tooltipBackground = base01,
-  selection = base07,
   cursor = base04;
 
 /// The editor theme styles for Material Dark.
-export const materialDarkTheme = EditorView.theme(
+export const toposDarkTheme = EditorView.theme(
   {
     "&": {
       color: base05,
@@ -134,7 +133,7 @@ export const materialDarkTheme = EditorView.theme(
 );
 
 /// The highlighting style for code in the Material Dark theme.
-export const materialDarkHighlightStyle = HighlightStyle.define([
+export const toposDarkHighlightStyle = HighlightStyle.define([
   { tag: t.keyword, color: base_purple },
   {
     tag: [t.name, t.deleted, t.character, t.macroName],
@@ -232,7 +231,7 @@ export const materialDarkHighlightStyle = HighlightStyle.define([
 
 /// Extension to enable the Material Dark theme (both the editor theme and
 /// the highlight style).
-export const materialDark: Extension = [
-  materialDarkTheme,
-  syntaxHighlighting(materialDarkHighlightStyle),
+export const toposTheme: Extension = [
+  toposDarkTheme,
+  syntaxHighlighting(toposDarkHighlightStyle),
 ];