Hello,
You need a leatherette seat renovation kit. The 1-seat kit will allow you to do both front seats.
To repair the hole, use a piece of leather, leatherette or denim. Slide it into the slit, spread it out, then use neoprene glue to fix it. The paste contained in the kit will allow you to fill the rest of the cavity.
Here is a short video; one of the projects involves a similar repair:
As for the information you have given us, it does not allow us to determine your colour with certainty.
In your situation we invite you to choose the colour "I provide a sample".
Complete your order and send at least 1 x 1 cm of material to the address shown on your invoice. You can also send a small removable item, such as a cover or a headrest, for example.
You will be informed by email once your sample has been received.
If this option does not seem possible, choose "receive the SOFOLK colour chart", but the result will be much less accurate.
At your service, the SOFOLK support team.