- Replace the idea of color schemes with the idea of named colors (since none of our colorschemes have used `colorA`)
- Pass through the normalized color to `_shields_test` to harmonize with BaseService and simplify testing
- Update service tests
- Move responsibility for color generation into the npm package
- Remove several color helper functions and their tests
- Update gh-badge public API to accept `color` and `labelColor`
This is a precursor to refactoring some of the logo code for #2473.
This is consistent with what we're pretty much already doing, and saves us from making the request during code review.
These were all autofixed and most of them seem easier to read. Some in the legacy services should be rewritten in more legible forms during refactor (ie using intermediate variables, or using request’s qs option). There are some in helper functions and elsewhere that should get rewritten separately. I don't want to change them in this PR because the changes will get lost in this diff, though we could identify them here and fix them before or just after.
