I haven't tried it with Garland or Bartik, but I have followed the sub-theme directions for Seven and it worked fine. Could it actually be a failure in the Color module?
 
Nancy
 
Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.


From: Roger

That's what I did in the first instance, it worked briefly then failed, 
Did not change anything.
Strangely I could reproduce the failure each time using the same database.
New database and the problem went away until I changed the colours, then
same failure occurred.
Fortunately it's a dev database so it doesn't matter if basic "stufff"
gets lost.