[Enhancement] distinguish between error message and correct value

[razonyang]

I found that it's unable to tell if the current value is correct, since their color are the same, for example,

Desc	URL	Preview
Nonexistance	https://flat.badgen.net/github/dependents-repo/hbstack/foobar-invalid?icon=hugo&label=used+by&color=green
Valid	https://flat.badgen.net/github/dependents-repo/hbstack/hb?icon=hugo&label=used+by&color=green

It would be great that if API can.

1. Always use danger color for errors.
2. Show more detailed error message other than just number, e.g. 404 not found, it would be helpful for those badges specify color as same as the danger color.

[amio]

Good idea, this is indeed a very confusing case.