diff --git a/src/ass_file.cpp b/src/ass_file.cpp
index 966e9cc19..c0e0ceb65 100644
--- a/src/ass_file.cpp
+++ b/src/ass_file.cpp
@@ -20,9 +20,12 @@
 #include "ass_dialogue.h"
 #include "ass_info.h"
 #include "ass_style.h"
+#include "ass_style_storage.h"
 #include "options.h"
 #include "utils.h"
 
+#include <libaegisub/fs.h>
+
 #include <algorithm>
 #include <boost/algorithm/string/case_conv.hpp>
 #include <boost/algorithm/string/predicate.hpp>
@@ -36,7 +39,7 @@ AssFile::~AssFile() {
 	Events.clear_and_dispose([](AssDialogue *e) { delete e; });
 }
 
-void AssFile::LoadDefault(bool include_dialogue_line) {
+void AssFile::LoadDefault(bool include_dialogue_line, agi::fs::path const& style_catalog_file) {
 	Info.emplace_back("Title", "Default Aegisub file");
 	Info.emplace_back("ScriptType", "v4.00+");
 	Info.emplace_back("WrapStyle", "0");
@@ -47,8 +50,16 @@ void AssFile::LoadDefault(bool include_dialogue_line) {
 	}
 	Info.emplace_back("YCbCr Matrix", "None");
 
+	// Add default style
 	Styles.push_back(*new AssStyle);
 
+	// Add/replace any catalog styles requested
+	if (!style_catalog_file.empty() && agi::fs::FileExists(style_catalog_file)) {
+		AssStyleStorage catalog;
+		catalog.Load(style_catalog_file);
+		catalog.ReplaceIntoFile(*this);
+	}
+
 	if (include_dialogue_line)
 		Events.push_back(*new AssDialogue);
 }
diff --git a/src/ass_file.h b/src/ass_file.h
index 9c1bd9ae8..3ae05a42d 100644
--- a/src/ass_file.h
+++ b/src/ass_file.h
@@ -81,7 +81,7 @@ public:
 
 	/// @brief Load default file
 	/// @param defline Add a blank line to the file
-	void LoadDefault(bool defline=true);
+	void LoadDefault(bool defline = true, agi::fs::path const& style_catalog_file = agi::fs::path());
 	/// Attach a file to the ass file
 	void InsertAttachment(agi::fs::path const& filename);
 	/// Get the names of all of the styles available
diff --git a/src/ass_style_storage.cpp b/src/ass_style_storage.cpp
index 1cf00a31d..8595a4f01 100644
--- a/src/ass_style_storage.cpp
+++ b/src/ass_style_storage.cpp
@@ -34,6 +34,7 @@
 
 #include "ass_style_storage.h"
 
+#include "ass_file.h"
 #include "ass_style.h"
 
 #include <libaegisub/fs.h>
@@ -96,3 +97,16 @@ AssStyle *AssStyleStorage::GetStyle(std::string const& name) {
 	}
 	return nullptr;
 }
+
+void AssStyleStorage::ReplaceIntoFile(AssFile &file) {
+	std::vector<AssStyle*> replaced_styles;
+	for (auto const& s : style) {
+		AssStyle *existing_style = file.GetStyle(s->name);
+		if (existing_style)
+			replaced_styles.push_back(existing_style);
+		file.Styles.push_back(*new AssStyle(*s));
+	}
+	for (auto s : replaced_styles)
+		delete s;
+}
+
diff --git a/src/ass_style_storage.h b/src/ass_style_storage.h
index e1099c183..46e4188ea 100644
--- a/src/ass_style_storage.h
+++ b/src/ass_style_storage.h
@@ -39,6 +39,7 @@
 #include <string>
 #include <vector>
 
+class AssFile;
 class AssStyle;
 
 class AssStyleStorage {
@@ -77,4 +78,8 @@ public:
 	/// Load stored styles from a file
 	/// @param filename Catalog filename. Does not have to exist.
 	void Load(agi::fs::path const& filename);
+
+	/// Insert all styles into a file, replacing existing styles with the same names
+	/// @param file File to replace styles in
+	void ReplaceIntoFile(AssFile &file);
 };
diff --git a/src/subs_controller.cpp b/src/subs_controller.cpp
index de1f8a954..6526786c3 100644
--- a/src/subs_controller.cpp
+++ b/src/subs_controller.cpp
@@ -21,6 +21,7 @@
 #include "ass_file.h"
 #include "ass_info.h"
 #include "ass_style.h"
+#include "ass_style_storage.h"
 #include "charset_detect.h"
 #include "compat.h"
 #include "command/command.h"
@@ -290,7 +291,7 @@ void SubsController::Close() {
 	filename.clear();
 	AssFile blank;
 	blank.swap(*context->ass);
-	context->ass->LoadDefault();
+	context->ass->LoadDefault(true, config::path->Decode("?user/catalog/Default.sty"));
 	context->ass->Commit("", AssFile::COMMIT_NEW);
 	FileOpen(filename);
 }