diff --git a/rich/console.py b/rich/console.py
index 2f685c875..81e3f83de 100644
--- a/rich/console.py
+++ b/rich/console.py
@@ -2252,12 +2252,12 @@ def get_svg_style(style: Style) -> str:
             css_rules = []
             color = (
                 _theme.foreground_color
-                if style.color is None
+                if (style.color is None or style.color.is_default)
                 else style.color.get_truecolor(_theme)
             )
             bgcolor = (
                 _theme.background_color
-                if style.bgcolor is None
+                if (style.bgcolor is None or style.bgcolor.is_default)
                 else style.bgcolor.get_truecolor(_theme)
             )
             if style.reverse:
@@ -2365,7 +2365,8 @@ def stringify(value: object) -> str:
                         else style.color.get_truecolor(_theme).hex
                     )
                 else:
-                    has_background = style.bgcolor is not None
+                    bgcolor = style.bgcolor
+                    has_background = bgcolor is not None and not bgcolor.is_default
                     background = (
                         _theme.background_color.hex
                         if style.bgcolor is None