make rlang-reserved font-style: normal

rsthemes/nord-polar-night-aurora.rstheme

@@ -105,7 +105,7 @@
 }
 
 .ace_keyword {
-  font-style: italic;
+  font-style: normal;
   color: #b48ead;
 }
 

rsthemes/nord-snow-storm.rstheme

@@ -106,7 +106,7 @@
 }
 
 .ace_keyword {
-  font-style: italic;
+  font-style: normal;
   color: #8fbcbb;
 }
 
@@ -248,12 +248,12 @@
 /* ---- RStudio Theme ---- */
 /* background */
 .rstudio-themes-flat .rstudio-themes-default {
-  background: #f9fafb !important;
+  background: #fafafa !important;
   color: #4c566a !important;
 }
 
 .rstudio-themes-flat .rstudio-themes-default .rstudio-themes-background {
-  background: #f9fafb !important;
+  background: #fafafa !important;
 }
 
 /* inactive tabs */

rsthemes/oceanic-plus.rstheme

@@ -106,7 +106,7 @@
 }
 
 .ace_keyword {
-  font-style: italic;
+  font-style: normal;
   color: #C594C5;
 }
 

rsthemes/solarized-dark.rstheme

@@ -106,7 +106,7 @@
 }
 
 .ace_keyword {
-  font-style: italic;
+  font-style: normal;
   color: #859900;
 }
 

rsthemes/solarized-light.rstheme

@@ -107,7 +107,7 @@
 }
 
 .ace_keyword {
-  font-style: italic;
+  font-style: normal;
   color: #859900;
 }
 

rstudio/_rstudio-dark.scss

@@ -85,7 +85,7 @@
 	background-color: $ui-line-active-selection;
 }
 .ace_keyword {
-	font-style: italic;
+  font-style: normal;
 	color: $rlang-reserved;
 	&.ace_operator {
 		font-style: normal;

rstudio/_rstudio-light.scss

@@ -86,7 +86,7 @@
 	background-color: $ui-line-active-selection;
 }
 .ace_keyword {
-	font-style: italic;
+	font-style: normal;
 	color: $rlang-reserved;
 	&.ace_operator {
 		font-style: normal;