Where to buy new seatbelt replacement?

[mcomet]

I forgot to say reason for replace is retract works ok ish and definitely tightens when driving etc..but when I get out of car, it doesnt retract so well all the way without feeding it in. Also the driver side is missing the black plastic dot that keeps the seatbelt clip from dropping to the floor... So I think I need to replace the actual unit not just straps.

As for color my interioris solid black... if I had a yellow center console and roll etc then I could see it...heh.