Add new named colors to webconfig

The 'br' variants were added in 0a0acc8, but not to named_colors in
webconfig.py.

Fix this oversight.

share/tools/web_config/webconfig.py

@@ -73,6 +73,14 @@ named_colors = {
     'magenta'   : 'FF00FF',
     'purple'    : 'FF00FF',
     'cyan'      : '00FFFF',
+    'grey'      : 'E5E5E5',
+    'brgrey'    : '555555',
+    'brbrown'   : 'FFFF55',
+    'bryellow'  : 'FFFF55',
+    'brblue'    : '5555FF',
+    'brmagenta' : 'FF55FF',
+    'brpurple'  : 'FF55FF',
+    'brcyan'    : '55FFFF',
     'white'     : 'FFFFFF'
 }