Re-striking the colours rules

I like the sugetion make for scuttiling, and would like to add my half
penerth worth-

Scuttiling as sugested (x number of turns until detonation), but if
bridge
symbol takes and fails a threshold check (or has already failed and not
repaired), the self destruct is disabled. This could be used to
represent
the controls/computers shoring out and allowing the ship to be captured
(I
don`t know what went
wrong captain, it should have already blown up?).

BIF
"yorkshire born,yorkshire bred,
strong in arms, thick in head"