Expected Behavior

Our goal is to improve the test coverage of the grommet core.
Components that need attention:
1-10 top components with the lowest coverage score.

1. Video - 60.53%
2. RadioButtonGroup - 61.22%
3. InfiniteScroll - 66.67%
4. RangeInput - 6885%
5. Layer - 70.12%
6. DataChart - 74.76%
7. WorldMap - 7

The Cutout component is not looking exactly like we want, this is probably related to styling and might be a good opportunity for a first contribution.

Current looking:

Expected looking (you can check [storybook](https://stor

Feature request summary

Make the clear button on a filter disappear if I need it to!

Rationale

On a filter where one option must always be selected, I don't want to have the 'Clear' button there especially when it is never clickable.

<img width="448" alt="Screen Shot 2020-05-14 at 3 24 42 PM" src="https://user-images.githubusercontent.com/31415327/81977854-a91e8880-95f8-11ea-931

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.11.10

Component

Nav

Environment

Chrome Latest

Reproduction link

Steps to reproduce

期望可以透传s

Is your feature request related to a problem? Please describe.
I use theme-ui on daily basis on personal and work projects. The documentation is quite large and I just want to remember something that I used before so I navigate the whole docs to get it.

Adding search in docs page will make it easy to remember things fast instead of navigating the documentation.

**Describe the solution

EuiIcon allows coloring icons via any valid color string or by one of our named color strings that match the branding colors. The app style icons have 2 colors. One that is the inherited fill and the other which uses the class .euiIcon__fillSecondary to fill with a different color.

Our docs specify that passing the color prop will override both the basic fill and the secondary fill.

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Proofreading from native speakers wanted. Review and comment on this PR 🙏.

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