"No visual difference" message outputting with color

[alistairjcbrown]

This is more to note the regression than an issue to can be solved in this repo, other than rolling back the PR - looks like some of the diff output messages aren't controlled by the color options - https://github.com/facebook/jest/blob/4bd3d4a05999170f423f7050d4e0537648499e88/packages/jest-diff/src/constants.ts#L10-L11
jest-diff is using chalk.dim directly, rather than making use of the commonColor option which we're turning off when color is set to false (from PR #123).

The issue I'm seeing after upgrading is that we're getting a diff with color codes when running Jest normally (no colors when running CI=true)

[thymikee]

Sounds like something that should be fixed upstream. Mind sending a PR?

[thymikee]

Closing this in favor of #129 :)