Creating Color Scheme: what are these modifiable settings?

I have created a simple dracula color scheme package, which is semi complete; I only can't find what these settings are:

(drracket:syncheck:untacked                ,unknown)
(framework:disabled-background-color       ,unknown)

(stepper:arrow-color             ,unknown)
(stepper:error-color             ,unknown)
(stepper:redex-highlight-color   ,unknown)
(stepper:reduct-highlight-color  ,unknown)

(framework:line-numbers-current-line-number-background  ,unknown)
(framework:line-numbers-current-line-number-foreground  ,unknown)

I was wondering whether there is some documentation that describes these settings, and if it's possible that these changes are simply not visible on windows, while they are at other OS?

I tried giving them a color (unknown) that was very easy to find, but wasn't able to see it's usage. Not a big deal if it's not included, but if it's possible, I would like to add extra line-number settings, but I'm not able to.

I honestly don't know how to add tags, but this should be a question, I suppose.

Start with the listed color-setting names and the linked Dracula color scheme package, then check whether those settings are documented or visible on Windows versus other operating systems. Done means recording what each setting controls and clarifying whether additional line-number settings can be used.