diff --git a/testfiles/colour-basic.luatex.tlg b/testfiles/colour-basic.luatex.tlg
index 4f9f0c8..cae043e 100644
--- a/testfiles/colour-basic.luatex.tlg
+++ b/testfiles/colour-basic.luatex.tlg
@@ -5,11 +5,14 @@ Loading xcolor...
 Loading a font with hex colour:
 TU/texgyreheros-regular.otf(0)/m/n:
   [texgyreheros-regular.otf]:mode=node;script=latn;language=dflt;color={5500FF};
-Loading a font by name (xcolor):
+Loading a font by name (l3color+xcolor):
 TU/texgyreheros-regular.otf(1)/m/n:
   [texgyreheros-regular.otf]:mode=node;script=latn;language=dflt;color={red};
 Defining a new xcolor colour and using it:
 TU/texgyreheros-regular.otf(2)/m/n:
-  [texgyreheros-regular.otf]:mode=node;script=latn;language=dflt;color={Foo};
+  [texgyreheros-regular.otf]:mode=node;script=latn;language=dflt;color={4D6680};
+Defining a new l3color colour and using it:
+TU/texgyreheros-regular.otf(3)/m/n:
+  [texgyreheros-regular.otf]:mode=node;script=latn;language=dflt;color={Bar};
 ***************
 Compilation 1 of test file completed with exit status 0
diff --git a/testfiles/colour-basic.lvt b/testfiles/colour-basic.lvt
index e20333a..cb98000 100644
--- a/testfiles/colour-basic.lvt
+++ b/testfiles/colour-basic.lvt
@@ -9,11 +9,17 @@
 \MSG{Loading a font with hex colour:}
 {\fontspec[Color=5500FF]{texgyreheros-regular.otf}\CURRNFSS}
 
-\MSG{Loading a font by name (xcolor):}
+\MSG{Loading a font by name (l3color+xcolor):}
 {\fontspec[Color=red]{texgyreheros-regular.otf}\CURRNFSS}
 
 \MSG{Defining a new xcolor colour and using it:}
 \definecolor{Foo}{rgb}{0.3,0.4,0.5}
 {\fontspec[Color=Foo]{texgyreheros-regular.otf}\CURRNFSS}
 
-\end{document}
\ No newline at end of file
+\MSG{Defining a new l3color colour and using it:}
+\ExplSyntaxOn
+\color_set:nnn{Bar}{rgb}{0.5,0.4,0.3}
+\ExplSyntaxOff
+{\fontspec[Color=Bar]{texgyreheros-regular.otf}\CURRNFSS}
+
+\end{document}
diff --git a/testfiles/colour-basic.tlg b/testfiles/colour-basic.tlg
index f0709ec..04ace6d 100644
--- a/testfiles/colour-basic.tlg
+++ b/testfiles/colour-basic.tlg
@@ -5,11 +5,14 @@ Loading xcolor...
 Loading a font with hex colour:
 TU/texgyreheros-regular.otf(0)/m/n:
   "[texgyreheros-regular.otf]/OT:script=latn;language=dflt;color=5500FFFF ;" at 10.0pt
-Loading a font by name (xcolor):
+Loading a font by name (l3color+xcolor):
 TU/texgyreheros-regular.otf(1)/m/n:
   "[texgyreheros-regular.otf]/OT:script=latn;language=dflt;color=FF0000FF ;" at 10.0pt
 Defining a new xcolor colour and using it:
 TU/texgyreheros-regular.otf(2)/m/n:
   "[texgyreheros-regular.otf]/OT:script=latn;language=dflt;color=4D6680FF ;" at 10.0pt
+Defining a new l3color colour and using it:
+TU/texgyreheros-regular.otf(3)/m/n:
+  "[texgyreheros-regular.otf]/OT:script=latn;language=dflt;color=80664CFF ;" at 10.0pt
 ***************
 Compilation 1 of test file completed with exit status 0