I don't know of any workshops that would do as you are looking for - but many DITs use LightSpace CMS for all colour control.
I'm not actually sure what you mean by a DIT chart?
I would suggest getting to know the demo of LightSpace, and reading the associate documentation. That should get you well versed in colour and colour management.
And I've not had a play with the Gemini - I would suggest asking that (and to be honest your other questions) on the CML (Cinematography Mailing List). A good group there.
Mob Boss at Light Illusion