I know the system keeps track of the tyre pressure indicating with colors if all areok.
Can you somehow view the pressure per tyre?

 

Yes with your gauge - there is no digital readout on the dash

 

Oh that is surprising since the car stores the pressure during calibration you would expect that you could query it somewhere...

 

It doesn't store the pressure. There is no pressure sensor.

 

Around 2015 Volvo went away from the in-wheel sensors (with the metal valve stems) and uses the wheel speed sensors to detect when one wheel is spinning faster due to low pressure changing the rolling distance. Two drawbacks to this approach 1) you don't see the true tire pressure (keep a guage in the glove box and measure your pressure regularly - don't trust the pressure on the filler) 2) you can get false positives when driving in wet snow (check the owners manual for the reset procedure). One big positive: you don't need in-wheel sensors so you can swap tires etc without having extra costs.