Document how Vector2, Vector3 and Color behave in a boolean context

See #39731.

1 files changed, 2 insertions, 1 deletions

diff --git a/doc/classes/Color.xml b/doc/classes/Color.xml
index b35d4fb36a..17b474531e 100644
--- a/doc/classes/Color.xml
+++ b/doc/classes/Color.xml
@@ -5,8 +5,9 @@
 	</brief_description>
 	<description>
 		A color is represented by red, green, and blue [code](r, g, b)[/code] components. Additionally, [code]a[/code] represents the alpha component, often used for transparency. Values are in floating-point and usually range from 0 to 1. Some properties (such as [member CanvasItem.modulate]) may accept values greater than 1.
-		You can also create a color from standardized color names by using [method @GDScript.ColorN] or directly using the color constants defined here. The standardized color set is based on the [url=https://en.wikipedia.org/wiki/X11_color_names]X11 color names[/url]. 
+		You can also create a color from standardized color names by using [method @GDScript.ColorN] or directly using the color constants defined here. The standardized color set is based on the [url=https://en.wikipedia.org/wiki/X11_color_names]X11 color names[/url].
 		If you want to supply values in a range of 0 to 255, you should use [method @GDScript.Color8].
+		[b]Note:[/b] In a boolean context, a Color will evaluate to [code]false[/code] if it's equal to [code]Color(0, 0, 0, 1)[/code] (opaque black). Otherwise, a Color will always evaluate to [code]true[/code].
 	</description>
 	<tutorials>
 	</tutorials>