Just join the Discord for VAM they have a Guides-Section with links for every question and problem you can come up with.
The official Discord for VAM
https://discord.gg/QHbAUBDq
You can just change the color in the tap for it in edit mode at hair. You can even make your own hair and tweak the physiks and stiffnes etz.
Just use one of the guides on the hub or the Discord is very orgenised. You should have a lot of morphs to work with in VAM if you download some community content.
Making your own hair: (the same tap has a base color option and a option for the color of the sculp-material)
If you want to import cloths from Marvelous Designer > DAZ > VAM
https://www.erome.com/a/TRKt5fve
or just form DAZ > VAM
https://www.erome.com/a/H6ImegFr
This guides are old but still work just fine for all i know. Search up a better guide on the Discord if you still need help.
Also you kinda fill up the Hub with posts like this you should just ask in help on the discord people are happy to help out the newcommers. I hope i was of help.
Have a good one.