No worries about the questions, glad to answer then
It does work out of the box in as much as it is a StyleVar that you can set to adjust the styling. Check out the StyleVar: dbtech_forumtabs_tab_text_color (Tab and Category Text Color). That is the one you need to adjust to change the colouring.
Edit: I noticed you mentioned the inactive tab, I can look at adding a secondary StyleVar in if you still need to adjust the colouring separately.