ohif-viewer/docs/latest/essentials/themeing.md

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# Themeing
Themeing is currently accomplished with color variables that are defined within
the [`:root`](https://css-tricks.com/almanac/selectors/r/root/) selector
(allowing them to cascade across all elements). This repository's components,
and the ones we consume from our
[`@ohif/ui` component library](https://react.ohif.org/styling-and-theming)
utilize them. We are interested in pursuing more robust themeing options, and
open to pull requests and discussion issues.
```css
:root {
/* Interface UI Colors */
--default-color: #9ccef9;
--hover-color: #ffffff;
--active-color: #20a5d6;
--ui-border-color: #44626f;
--ui-border-color-dark: #3c5d80;
--ui-border-color-active: #00a4d9;
--primary-background-color: #000000;
--box-background-color: #3e5975;
--text-primary-color: #ffffff;
--text-secondary-color: #91b9cd;
--input-background-color: #2c363f;
--input-placeholder-color: #d3d3d3;
--table-hover-color: #2c363f;
--table-text-primary-color: #ffffff;
--table-text-secondary-color: #91b9cd;
--large-numbers-color: #6fbde2;
--state-error: #ffcccc;
--state-error-border: #ffcccc;
--state-error-text: #ffcccc;
/* Common palette */
--ui-yellow: #e29e4a;
--ui-sky-blue: #6fbde2;
/* State palette */
--ui-state-error: #ffcccc;
--ui-state-error-border: #993333;
--ui-state-error-text: #661111;
--ui-gray-lighter: #436270;
--ui-gray-light: #516873;
--ui-gray: #263340;
--ui-gray-dark: #16202b;
--ui-gray-darker: #151a1f;
--ui-gray-darkest: #14202a;
--calendar-day-color: #d3d3d3;
--calendar-day-border-color: #d3d3d3;
--calendar-day-active-hover-background-color: #516873;
--calendar-main-color: #263340;
--viewport-border-thickness: 1px;
}
```
## White Labeling
> A white-label product is a product or service produced by one company (the
> producer) that other companies (the marketers) rebrand to make it appear as if
> they had made it - [Wikipedia: White-Label Product][wikipedia]
Current white-labeling options are limited. We expose the ability to replace the
"Logo" section of the application with a custom "Logo" component. You can do
this by adding a `whiteLabelling` key to your
[configuration file](./configuration.md).
```js
function RadicalImagingLogo() {
return React.createElement(
'a',
{
target: '_blank',
rel: 'noopener noreferrer',
className: 'header-brand',
href: 'http://radicalimaging.com',
},
React.createElement('h5', {}, 'RADICAL IMAGING')
);
}
props.whiteLabelling = {
logoComponent: RadicalImagingLogo(),
};
```
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[wikipedia]: https://en.wikipedia.org/wiki/White-label_product
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