Added Blue Gray theme

Come on people!  If you see it on the list, add it!  Don't just sit there
and hope it magically gets added to the source.

config/config_default.php

@@ -286,6 +286,9 @@
     $theme[16]["PATH"] = "../themes/deepocean2_theme.php";
     $theme[16]["NAME"] = "Deep Ocean 2";
 
+    $theme[17]["PATH"] = "../themes/blue_gray_theme.php";
+    $theme[17]["NAME"] = "Blue Gray";
+
 //  LDAP server(s)
 //
 //    Array of arrays with LDAP server parameters. See

themes/blue_grey_theme.php

@@ -0,0 +1,24 @@
+<?php
+   /** Author:       M.J. Prinsen
+       Date:         July 20, 2001
+       Theme Name:   "Blue-grey"
+
+       Deep Ocean is a theme that is very blue with a dark grey background.
+    **/
+
+    global $color;
+    $color[0]   = "#6188A9"; // (middle blue)    TitleBar
+    $color[1]   = "#800000"; // (red)
+    $color[2]   = "#CC0000"; // (light red)      Warning/Error Messages
+    $color[3]   = "#294763"; // (dark blue)      Left Bar Background
+    $color[4]   = "#929292"; // (dark grey)      Normal Background or C0C0C0
+    $color[5]   = "#597D9D"; // (middle blue)	 Table Headers
+    $color[6]   = "#FFFFFF"; // (white)          Text on left bar
+    $color[7]   = "#FFFFFF"; // (white)          Links
+    $color[8]   = "#FFFFFF"; // (white)          Normal text
+    $color[9]   = "#587B99"; // (middle gray)    Darker version of #0
+    $color[10]  = "#496E8B"; // (dark gray)      Darker version of #9
+    $color[11]  = "#A7C5F3"; // (light blue)     Special Folders color
+    $color[12]  = "#7092B4";
+?>
+)