diff --git a/css/theme-martian.css b/css/theme-martian.css
index 04028b6..f0348c7 100644
--- a/css/theme-martian.css
+++ b/css/theme-martian.css
@@ -553,6 +553,158 @@ img[src$="/img/matrix.svg"] {
   background-color: hsla(20, 40%, 50%, .08);
 }
 
+/* syntax highlighting */
+
+.chroma .hl {
+	background-color:#e5e5e5
+}
+.chroma .lnt,
+.chroma .ln {
+	color:#7f7f7f
+}
+.chroma .k,
+.chroma .kc,
+.chroma .kd,
+.chroma .kn,
+.chroma .kp,
+.chroma .kr {
+	color:#d73a49
+}
+.chroma .kt {
+	color:#458
+}
+.chroma .na {
+	color:#d73a49
+}
+.chroma .nb {
+	color:#005cc5
+}
+.chroma .bp {
+	color:#999
+}
+.chroma .nc {
+	color:#458
+}
+.chroma .no {
+	color:teal
+}
+.chroma .nd {
+	color:#3c5d5d
+}
+.chroma .ni {
+	color:#6f42c1
+}
+.chroma .ne {
+	color:#900
+}
+.chroma .nf {
+	color:#005cc5
+}
+.chroma .nl {
+	color:#900
+}
+.chroma .nn {
+	color:#555
+}
+.chroma .nx {
+	color:#24292e
+}
+.chroma .nt {
+	color:#22863a
+}
+.chroma .nv,
+.chroma .vc,
+.chroma .vg,
+.chroma .vi {
+	color:teal
+}
+.chroma .s,
+.chroma .sa,
+.chroma .sb,
+.chroma .sc,
+.chroma .dl,
+.chroma .sd,
+.chroma .s2,
+.chroma .se,
+.chroma .sh,
+.chroma .si,
+.chroma .sx {
+	color:#106303
+}
+.chroma .sr {
+	color:#22863a
+}
+.chroma .s1 {
+	color:#cc7a00
+}
+.chroma .ss {
+	color:#106303
+}
+.chroma .m,
+.chroma .mb,
+.chroma .mf,
+.chroma .mh,
+.chroma .mi,
+.chroma .il,
+.chroma .mo {
+	color:#099
+}
+.chroma .o,
+.chroma .ow {
+	color:#d73a49
+}
+.chroma .c,
+.chroma .ch {
+	color:#6a737d
+}
+.chroma .cm {
+	color:#998
+}
+.chroma .c1 {
+	color:#6a737d
+}
+.chroma .cs {
+	color:#999
+}
+.chroma .cp {
+	color:#109295
+}
+.chroma .cpf {
+	color:#4c4dbc
+}
+.chroma .gd {
+	color:#000;
+	background-color:#fdd
+}
+.chroma .ge {
+	color:#000
+}
+.chroma .gr {
+	color:#a00
+}
+.chroma .gh {
+	color:#999
+}
+.chroma .gi {
+	color:#000;
+	background-color:#dfd
+}
+.chroma .go {
+	color:#888
+}
+.chroma .gp {
+	color:#555
+}
+.chroma .gu {
+	color:#aaa
+}
+.chroma .gt {
+	color:#a00
+}
+.chroma .w {
+	color:#bbb
+}
+
 /*
 * martian.css is free software: you can redistribute and/or modify
 * it under the terms of the GNU Affero General Public License as published by