diff --git a/tests/ipynbref/00_notebook_tour.orig.html b/tests/ipynbref/00_notebook_tour.orig.html
index f3bf7f0..c52f76a 100644
--- a/tests/ipynbref/00_notebook_tour.orig.html
+++ b/tests/ipynbref/00_notebook_tour.orig.html
@@ -1084,11 +1084,11 @@ body {
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/ipynbref/Gun_Data.orig.html b/tests/ipynbref/Gun_Data.orig.html
index 38234e2..d50c9fa 100644
--- a/tests/ipynbref/Gun_Data.orig.html
+++ b/tests/ipynbref/Gun_Data.orig.html
@@ -1084,11 +1084,11 @@ body {
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/ipynbref/IntroNumPy.orig.html b/tests/ipynbref/IntroNumPy.orig.html
index 33875ac..4ff350e 100644
--- a/tests/ipynbref/IntroNumPy.orig.html
+++ b/tests/ipynbref/IntroNumPy.orig.html
@@ -1084,11 +1084,11 @@ body {
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/ipynbref/XKCD_plots.orig.html b/tests/ipynbref/XKCD_plots.orig.html
index 7667302..4e9cfc9 100644
--- a/tests/ipynbref/XKCD_plots.orig.html
+++ b/tests/ipynbref/XKCD_plots.orig.html
@@ -1084,11 +1084,11 @@ body {
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/ipynbref/data_geeks_team_calendar.orig.html b/tests/ipynbref/data_geeks_team_calendar.orig.html
index ee1b0fa..32b2ee3 100644
--- a/tests/ipynbref/data_geeks_team_calendar.orig.html
+++ b/tests/ipynbref/data_geeks_team_calendar.orig.html
@@ -1084,11 +1084,11 @@ body {
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/template_ref/00_notebook_tour_orig.html b/tests/template_ref/00_notebook_tour_orig.html
index 2a22a71..3de8723 100644
--- a/tests/template_ref/00_notebook_tour_orig.html
+++ b/tests/template_ref/00_notebook_tour_orig.html
@@ -1073,11 +1073,11 @@ p{margin-bottom:0;}
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */
diff --git a/tests/template_ref/IntroNumPy_orig.html b/tests/template_ref/IntroNumPy_orig.html
index 651e570..42c3004 100644
--- a/tests/template_ref/IntroNumPy_orig.html
+++ b/tests/template_ref/IntroNumPy_orig.html
@@ -1073,11 +1073,11 @@ p{margin-bottom:0;}
 .highlight .gr { color: #FF0000 } /* Generic.Error */
 .highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
 .highlight .gi { color: #00A000 } /* Generic.Inserted */
-.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .go { color: #888888 } /* Generic.Output */
 .highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
 .highlight .gs { font-weight: bold } /* Generic.Strong */
 .highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
-.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
 .highlight .kc { color: #008000; font-weight: bold } /* Keyword.Constant */
 .highlight .kd { color: #008000; font-weight: bold } /* Keyword.Declaration */
 .highlight .kn { color: #008000; font-weight: bold } /* Keyword.Namespace */