Tiger, my 69 came with a white roof (now also sprayed black), I but I did hear that black was an option. Dunno about carpet colour, but definitely go with what
you want. A 'tripple black' car might be a bit too much...
I hand made my carpets

(I was bored and living in Townsville). I would definitely consider the Appbiz versions for their price and convenience (they won't be concours, but very nice none the less).
I found fitting the carpet relatively easy... careful use of a hot air gun, 3M adhesive in 'gel' format and a can of the aerosol version for hard to reach spots. Use weights or bricks wrapped in newspaper to keep pressure in key areas. Now here's the big 'tip' I found invaluable... a solid metal ice-cream scoop. You use the back of it to push, rub and stretch the carpet into contours as the glue grabs.