Fix some bugs with the colors stuff.  You can now specify folder color with the folder extension.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13659 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/sample.colors b/docs/sample.colors
index 2f90dee..930a34e 100644
--- a/docs/sample.colors
+++ b/docs/sample.colors
@@ -1,4 +1,7 @@
-mp3:904010
-ogg:D04040
-txt:FF0000
-cfg:00FF00
+folder:808080

+ipod:00B0B0

+mp3:00FF00

+flac:00FF00

+ogg:00FF00

+txt:FF0000

+cfg:D00000