diff --git a/arcade/camera/camera_2d.py b/arcade/camera/camera_2d.py
index 79b6bf235..a1a03ae4b 100644
--- a/arcade/camera/camera_2d.py
+++ b/arcade/camera/camera_2d.py
@@ -569,7 +569,6 @@ def projection(self) -> Rect:
 
     @projection.setter
     def projection(self, value: Rect) -> None:
-
         # Unpack and validate
         if not value:
             raise ZeroProjectionDimension((f"Projection area is 0, {value.lrbt}"))
diff --git a/arcade/future/splash.py b/arcade/future/splash.py
index 5f3318fc6..104279c7e 100644
--- a/arcade/future/splash.py
+++ b/arcade/future/splash.py
@@ -21,7 +21,7 @@ class ArcadeSplash(View):
         dark_mode: If True, the splash screen will be shown in dark mode. (Default False)
     """
 
-    def __init__(self, view: View, duration: int = 3, dark_mode: bool = False):
+    def __init__(self, view: View, duration: float = 1.5, dark_mode: bool = False):
         super().__init__()
         self._next_view = view
         self._duration = duration
diff --git a/arcade/gui/ui_manager.py b/arcade/gui/ui_manager.py
index b3731940d..22264bacb 100644
--- a/arcade/gui/ui_manager.py
+++ b/arcade/gui/ui_manager.py
@@ -88,6 +88,7 @@ def on_draw():
 
     _enabled = False
 
+    DEFAULT_LAYER = 0
     OVERLAY_LAYER = 10
 
     def __init__(self, window: Optional[arcade.Window] = None):
@@ -103,7 +104,7 @@ def __init__(self, window: Optional[arcade.Window] = None):
 
         self.register_event_type("on_event")
 
-    def add(self, widget: W, *, index=None, layer=0) -> W:
+    def add(self, widget: W, *, index=None, layer=DEFAULT_LAYER) -> W:
         """Add a widget to the :class:`UIManager`.
 
         Added widgets will receive ui events and be rendered.
@@ -141,7 +142,9 @@ def remove(self, child: UIWidget):
                 child.parent = None
                 self.trigger_render()
 
-    def walk_widgets(self, *, root: Optional[UIWidget] = None, layer=0) -> Iterable[UIWidget]:
+    def walk_widgets(
+        self, *, root: Optional[UIWidget] = None, layer=DEFAULT_LAYER
+    ) -> Iterable[UIWidget]:
         """Walks through widget tree, in reverse draw order (most top drawn widget first)
 
         Args:
@@ -165,7 +168,9 @@ def clear(self):
             for widget in layer[:]:
                 self.remove(widget)
 
-    def get_widgets_at(self, pos: Point2, cls: type[W] = UIWidget, layer=0) -> Iterable[W]:
+    def get_widgets_at(
+        self, pos: Point2, cls: type[W] = UIWidget, layer=DEFAULT_LAYER
+    ) -> Iterable[W]:
         """Yields all widgets containing a position, returns first top laying widgets
         which is instance of cls.