diff --git a/src/defaults/preferences/threadvisdefault.js b/src/defaults/preferences/threadvisdefault.js
index 296938a..bf24262 100644
--- a/src/defaults/preferences/threadvisdefault.js
+++ b/src/defaults/preferences/threadvisdefault.js
@@ -40,9 +40,9 @@ pref("extensions.threadvis.visualisation.arcwidth", 2);
 pref("extensions.threadvis.visualisation.colour", "author");
 pref("extensions.threadvis.visualisation.colours.background", "");
 pref("extensions.threadvis.visualisation.colours.border", "");
-pref("extensions.threadvis.visualisation.colours.received", "#7FFF00,#00FFFF,#7F00FF,#997200,#009926,#002699,#990072,#990000,#4C9900,#009999,#4C0099,#FFBF00,#00FF3F,#003FFF,#FF00BF");
-pref("extensions.threadvis.visualisation.colours.sent", "#ff0000");
-pref("extensions.threadvis.visualisation.colours.current", "#000000");
+pref("extensions.threadvis.visualisation.colours.received", "#ffa90e,#bd1f01,#94a4a2,#832db6,#a96b59,#e76300,#b9ac70,#717581,#92dadd,#c849a9,#78a05f,#cdcf84,#4545b2,#7fe593,#c7b5f0");
+pref("extensions.threadvis.visualisation.colours.sent", "#3f90da");
+pref("extensions.threadvis.visualisation.colours.current", "#888888");
 pref("extensions.threadvis.visualisation.dotsize", 10);
 pref("extensions.threadvis.visualisation.highlight", true);
 pref("extensions.threadvis.visualisation.minimalwidth", 100);