diff --git a/docs/book.toml b/docs/book.toml
index 3235c8a..55717c3 100755
--- a/docs/book.toml
+++ b/docs/book.toml
@@ -31,3 +31,9 @@ level = 0         # the depth to start folding
 date = "\\today"
 documentclass = "report"
 fontsize = "10pt"
+xcoloroptions="table,x11names"
+colorlinks="true"
+linkcolor="DarkOrchid4"
+urlcolor="RoyalBlue3"
+citecolor="SeaGreen4"
+filecolor="Magenta4"