Getting back to the colours you remember when scanning slides or negatives has always been a bit of challenge. And my early attempts - using eye alone - were rarely a success.
Checking around the Internet I realised that I was not alone - but also others had tackled and overcome the problem. At least one of these was selling his method - in the form of Photoshop actions - and claiming consistent results. So my challenge was to work out how a standardised script could do better than my guess work.
After thinking about how film is made, processed and made into prints the key seemed to lie in adjusting each of the three primary colour layers separately. And with Photoshop, Photoshop Elements and most other editors that can achieved with a dedicated tool. One that makes the process straight forward.
So to make things as easy as possible here is a worked example ...