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Consistent Colors
=================
[Back](index.md)
Since XMPP can be used on multiple platforms at the same time,
it might be a good idea to render given Strings like nicknames in the same
color on all platforms to provide a consistent user experience.
The utility class `ConsistentColor` allows the generation of colors to a given
string following the specification of [XEP-0392](https://xmpp.org/extensions/xep-0392.html).
##Usage
To generate a consistent color for a given string, call
```
float[] rgb = ConsistentColor.RGBFrom(input);
```
The resulting float array contains values for RGB in the range of 0 to 1.
##Color Deficiency Corrections
Some users might suffer from color vision deficiencies. To compensate those deficiencies,
the API allows for color correction. The color correction mode is a static value, which can be changed at any time.
To correct colors for users with red-green color deficiency use the following code:
```
ConsistentColor.activateRedGreenBlindnessCorrection();
```
For color correction for users with blue-blindness, call
```
ConsistentColor.activateBlueBlindnessCorrection();
```
To deactivate color vision deficiency correction, call
```
ConsistenColor.deactivateDeficiencyCorrection();
```

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| HTTP File Upload | [XEP-0363](http://xmpp.org/extensions/xep-0363.html) | Protocol to request permissions to upload a file to an HTTP server and get a shareable URL. |
| [Multi-User Chat Light](muclight.md) | [XEP-xxxx](http://mongooseim.readthedocs.io/en/latest/open-extensions/xeps/xep-muc-light.html) | Multi-User Chats for mobile XMPP applications and specific enviroment. |
| [OMEMO Multi End Message and Object Encryption](omemo.md) | [XEP-XXXX](https://conversations.im/omemo/xep-omemo.html) | Encrypt messages using OMEMO encryption (currently only with smack-omemo-signal -> GPLv3). |
| [Consistent Color Generation](consistent_colors.md) | [XEP-0392](http://xmpp.org/extensions/xep-0392.html) | Generate consistent colors for identifiers like usernames to provide a consistent user experience. |
| Google GCM JSON payload | n/a | Semantically the same as XEP-0335: JSON Containers |