Your leak has nothing to do with the color or material of the impeller.Most after market pumps have a 'cheap' type of seal and its the seal that has let go...better pumps,including the OEM, dispite what is said about it, use a ceramic type of shaft seal which has a far better durability...

V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
..don't talk about it DO IT !!!