Typ defs missing for commons.color

[vincerubinetti]

Product

axe-core

Product Version

4.10.0

Latest Version

• I have tested the issue with the latest version of the product

Issue Description

https://github.com/search?q=repo%3Adequelabs%2Faxe-core%20getBackgroundColor&type=code

https://github.com/search?q=repo%3Adequelabs%2Faxe-core+commons&type=code

I've run into other incorrect/missing typings too but unfortunately can't remember them. I'd strongly recommend a repo-wide audit for types.

[WilcoFiers]

Axe core commons are not considered part of the public API of axe-core. Some of them are typed because people have found typing them useful, but most of them are not. Feel free to open a pull request if you wish to have types for these.