diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47daa50..e3a122a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,38 +8,27 @@ find_package(Qt6 REQUIRED COMPONENTS Quick)
 
 qt_standard_project_setup(REQUIRES 6.10)
 
-# Content of downloaded design from Figma to Qt or similar
-if (EXISTS "${CMAKE_CURRENT_LIST_DIR}/importedcontent/CMakeLists.txt")
-    add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/importedcontent)
-endif()
-
 qt_add_executable(apparchpack
-    main.cpp
+  main.cpp
+)
+
+set_source_files_properties(qml/style/Theme.qml
+  PROPERTIES QT_QML_SINGLETON_TYPE TRUE
 )
 
 qt_add_qml_module(apparchpack
     URI archpack
     QML_FILES
-        Main.qml
-)
-
-# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
-# If you are developing for iOS or macOS you should consider setting an
-# explicit, fixed bundle identifier manually though.
-set_target_properties(apparchpack PROPERTIES
-#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.apparchpack
-    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
-    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
-    MACOSX_BUNDLE TRUE
-    WIN32_EXECUTABLE TRUE
+      Main.qml
+      qml/style/Theme.qml
 )
 
 target_link_libraries(apparchpack
-    PRIVATE Qt6::Quick
+  PRIVATE Qt6::Quick
 )
 
 install(TARGETS apparchpack
-    BUNDLE DESTINATION .
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+  BUNDLE DESTINATION .
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
 )
diff --git a/Main.qml b/Main.qml
index da3d954..3d001e7 100644
--- a/Main.qml
+++ b/Main.qml
@@ -1,6 +1,8 @@
 import QtQuick
 import QtQuick.Controls.Basic
 
+import archpack
+
 ApplicationWindow {
   id: window
 
@@ -12,5 +14,5 @@ ApplicationWindow {
   minimumWidth: 200
   minimumHeight: 250
   visible: true
-  color: "#303446"
+  color: Theme.base
 }
diff --git a/qml/style/Theme.qml b/qml/style/Theme.qml
new file mode 100644
index 0000000..0d3f06d
--- /dev/null
+++ b/qml/style/Theme.qml
@@ -0,0 +1,7 @@
+pragma Singleton
+
+import QtQuick 2.15
+
+QtObject {
+  readonly property color base: "#303446"
+}