Black is a lot easier to match... I had my back window smashed some years back, and got a complete bootlid with internals and electrics for £50 delivered, easy to fit, but may take two people to position. I did it on my own but two people is preferable.
Ebay has some great bargains; if it's just rust then I'd camp out on there to you find one, good luck mate :)
Only other thing is the year... mines a 55, but my replacement lid was a Pirelli 08 so green glass opposed to Blue, but because it's not side by side, you can never tell.