diff --git a/Sources/Runestone/StringSyntaxHighlighter.swift b/Sources/Runestone/StringSyntaxHighlighter.swift
index 000122d47..54994ab3e 100644
--- a/Sources/Runestone/StringSyntaxHighlighter.swift
+++ b/Sources/Runestone/StringSyntaxHighlighter.swift
@@ -27,7 +27,7 @@ public final class StringSyntaxHighlighter {
     ///   - language: The language to use when parsing the text
     ///   - languageProvider: Object that can provide embedded languages on demand. A strong reference will be stored to the language provider..
     public init(
-        theme: Theme = DefaultTheme(),
+        theme: Theme = DefaultTheme.share,
         language: TreeSitterLanguage,
         languageProvider: TreeSitterLanguageProvider? = nil
     ) {
diff --git a/Sources/Runestone/TextView/Appearance/DefaultTheme.swift b/Sources/Runestone/TextView/Appearance/DefaultTheme.swift
index b392ec33f..2492b0d47 100644
--- a/Sources/Runestone/TextView/Appearance/DefaultTheme.swift
+++ b/Sources/Runestone/TextView/Appearance/DefaultTheme.swift
@@ -18,6 +18,8 @@ public final class DefaultTheme: Runestone.Theme {
     public let selectionColor = UIColor(themeColorNamed: "selection")
 
     public init() {}
+    
+    public static let share = DefaultTheme()
 
     // swiftlint:disable:next cyclomatic_complexity
     public func textColor(for highlightName: String) -> UIColor? {
diff --git a/Sources/Runestone/TextView/Core/LayoutManager.swift b/Sources/Runestone/TextView/Core/LayoutManager.swift
index 6ee8f1f8f..7d91343f1 100644
--- a/Sources/Runestone/TextView/Core/LayoutManager.swift
+++ b/Sources/Runestone/TextView/Core/LayoutManager.swift
@@ -35,7 +35,7 @@ final class LayoutManager {
             }
         }
     }
-    var theme: Theme = DefaultTheme() {
+    var theme: Theme = DefaultTheme.share {
         didSet {
             if theme !== oldValue {
                 gutterBackgroundView.backgroundColor = theme.gutterBackgroundColor
diff --git a/Sources/Runestone/TextView/Core/TextView.swift b/Sources/Runestone/TextView/Core/TextView.swift
index 69bfdcfd4..4448e761b 100644
--- a/Sources/Runestone/TextView/Core/TextView.swift
+++ b/Sources/Runestone/TextView/Core/TextView.swift
@@ -641,7 +641,7 @@ open class TextView: UIScrollView {
     /// Create a new text view.
     /// - Parameter frame: The frame rectangle of the text view.
     override public init(frame: CGRect) {
-        textInputView = TextInputView(theme: DefaultTheme())
+        textInputView = TextInputView(theme: DefaultTheme.share)
         super.init(frame: frame)
         backgroundColor = .white
         textInputView.delegate = self
diff --git a/Sources/Runestone/TextView/LineController/LineController.swift b/Sources/Runestone/TextView/LineController/LineController.swift
index a837661ec..a673e12fc 100644
--- a/Sources/Runestone/TextView/LineController/LineController.swift
+++ b/Sources/Runestone/TextView/LineController/LineController.swift
@@ -25,7 +25,7 @@ final class LineController {
             }
         }
     }
-    var theme: Theme = DefaultTheme() {
+    var theme: Theme = DefaultTheme.share {
         didSet {
             syntaxHighlighter?.theme = theme
             applyThemeToAllLineFragmentControllers()
diff --git a/Sources/Runestone/TextView/SyntaxHighlighting/Internal/PlainText/PlainTextSyntaxHighlighter.swift b/Sources/Runestone/TextView/SyntaxHighlighting/Internal/PlainText/PlainTextSyntaxHighlighter.swift
index e77967289..711160187 100644
--- a/Sources/Runestone/TextView/SyntaxHighlighting/Internal/PlainText/PlainTextSyntaxHighlighter.swift
+++ b/Sources/Runestone/TextView/SyntaxHighlighting/Internal/PlainText/PlainTextSyntaxHighlighter.swift
@@ -2,7 +2,7 @@ import CoreGraphics
 import Foundation
 
 final class PlainTextSyntaxHighlighter: LineSyntaxHighlighter {
-    var theme: Theme = DefaultTheme()
+    var theme: Theme = DefaultTheme.share
     var kern: CGFloat = 0
     var canHighlight: Bool {
         false
diff --git a/Sources/Runestone/TextView/SyntaxHighlighting/Internal/TreeSitter/TreeSitterSyntaxHighlighter.swift b/Sources/Runestone/TextView/SyntaxHighlighting/Internal/TreeSitter/TreeSitterSyntaxHighlighter.swift
index f0bc23781..368871ec1 100644
--- a/Sources/Runestone/TextView/SyntaxHighlighting/Internal/TreeSitter/TreeSitterSyntaxHighlighter.swift
+++ b/Sources/Runestone/TextView/SyntaxHighlighting/Internal/TreeSitter/TreeSitterSyntaxHighlighter.swift
@@ -15,7 +15,7 @@ enum TreeSitterSyntaxHighlighterError: LocalizedError {
 }
 
 final class TreeSitterSyntaxHighlighter: LineSyntaxHighlighter {
-    var theme: Theme = DefaultTheme()
+    var theme: Theme = DefaultTheme.share
     var kern: CGFloat = 0
     var canHighlight: Bool {
         languageMode.canHighlight