diff -up source-highlight-3.1.8/src/esc.style.no-black source-highlight-3.1.8/src/esc.style
--- source-highlight-3.1.8/src/esc.style.no-black	2019-03-20 16:52:33.053965325 +0000
+++ source-highlight-3.1.8/src/esc.style	2019-03-20 16:52:42.502965289 +0000
@@ -7,7 +7,7 @@ comment cyan i ;
 number purple ;
 preproc darkblue b ;
 symbol darkred ;
-function black b;
+function b;
 cbracket red;
 variable darkgreen ;