I did not take your comment adversely, you were only saying that my scheme was not for you, the conversations with david arose because of my repost
its only that if ALL subs were black then the general public would pass them by much more quickly, when on show.
After all there is no quicker way than to appease "her indoors", than to have some pretty colours for them to look at,
Can you imagine, a wife, saying to her spouse, oh look darling, that mans submarine matches my nail varnish !!