Fix logic, move documentation.

src/com/dmdirc/Channel.java

@@ -411,14 +411,15 @@ public class Channel extends MessageTarget implements GroupChat {
     /**
      * Returns a string[] containing the nickname/ident/host of a channel client.
      *
-     * 0 - mode
-     * 1 - nickname
-     * 2 - ident
-     * 3 - hostname
+     *
      *
      * @param client The channel client to check
      *
-     * @return A string[] containing displayable components
+     * @return  A string[] containing displayable components
+     *          0 - mode
+     *          1 - nickname
+     *          2 - ident
+     *          3 - hostname
      */
     private String[] getDetails(final GroupChatUser client) {
         if (client == null) {
@@ -441,7 +442,7 @@ public class Channel extends MessageTarget implements GroupChat {
             if (foreground.isPresent()) {
                 String prefix = Styliser.CODE_HEXCOLOUR + ColourUtils.getHex(foreground.get());
                 if (background.isPresent()) {
-                    prefix = ',' + ColourUtils.getHex(background.get());
+                    prefix += ',' + ColourUtils.getHex(background.get());
                 }
                 res[1] = prefix + res[1] + Styliser.CODE_HEXCOLOUR;
             }