Cork flooring

ds1980

Have just uncovered these in a 50's semi we have just bought. I believe there cork they are about 20cm x 20cm. Have been told they are very 70's but i think they look really nice. They are in the hall and lounge and are very dark in colour.

Do you think i could leave them as i think retro is in at present isn't it?

I think generally theyre in good nick but might have to buy some spares. Any advice on care or where i can get them from?

Also could i sand them down and redo the a different colour???

Thanks,