[DOCS] Project Settings: Default clear color

doc/classes/ProjectSettings.xml

@@ -630,7 +630,7 @@
 			Fix to improve physics jitter, specially on monitors where refresh rate is different than physics FPS.
 		</member>
 		<member name="rendering/environment/default_clear_color" type="Color" setter="" getter="">
-			Default background clear color.
+			Default background clear color. Overridable per [Viewport] using its [Environment]. See [member Environment.background_mode] and [member Environment.background_color] in particular. To change this default color programmatically, use [method VisualServer.set_default_clear_color].
 		</member>
 		<member name="rendering/limits/buffers/blend_shape_max_buffer_size_kb" type="int" setter="" getter="">
 			Max buffer size for blend shapes. Any blend shape bigger than this will not work.