Index: trunk/doc/conf/tree/appearance_color.html
===================================================================
--- trunk/doc/conf/tree/appearance_color.html	(revision 34130)
+++ trunk/doc/conf/tree/appearance_color.html	(revision 34131)
@@ -25,6 +25,7 @@
 <tr><td> mask <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> default mask layer color (when a new mask layer is created)
 <tr><td> paste <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> default paste layer color (when a new paste layer is created)
 <tr><td> element <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> default silk layer color (when a new silk layer is created)
+<tr><td> black_group <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> 'black' color used by the 'black current group' feature (set it to white if you use dark background)
 <tr><td> background <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> [hidlib] background and cursor color ...
 <tr><td> off_limit <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> [hidlib] on-screen background beyond the configured drawing area
 <tr><td> grid <td><a href="RND_CFN_COLOR.html"> rnd_cfn_color </a><td> 0 <td> [hidlib] on-screen grid