After some issues with the color management in my computers I was thinking to buy a colorimeter. The decision is not easy because devices don’t support Linux natively. Today, XatakaFoto have published a post about a new company (Hughski) that sell a Open Source colorimeter developed by themself. All information is available so you could do it by yourself (DIY project).
I have preordered one, and hopefully it will be here in some weeks.
I will report further information.