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TiddlyWiki5/editions/tw5.com/tiddlers/concepts/ColourPalettes.tid
2014-09-11 15:52:47 +01:00

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created: 20140216102454178
modified: 20140216102722184
tags: Concepts
title: ColourPalettes
type: text/vnd.tiddlywiki
Colour palettes bind logical colour names (such as ''page-background'') to actual CSS colours (such as ''#fe0'').
Entire colour palettes are stored in a single [[data tiddler|DataTiddlers]].
The title of the tiddler containing the current colour palette is identified by the tiddler [[$:/palette]].
To retrieve a named colour from the current palette you can use the ''colour'' macro:
```
<<colour page-background>>
```
The ''colour'' macro is defined like this:
```
\define colour(name)
<$transclude tiddler={{$:/palette}} index="$name$"/>
\end
```
By convention, each theme provides a default colour palette in the tiddler [[$:/config/DefaultPalette]] tiddler. Thus, setting the tiddler [[$:/theme]] to the string `$:/config/DefaultPalette` will revert to the palette packaged with the current theme (as long as it hasn't been redefined, since it is a shadow tiddler).
Palette tiddlers should have the following fields:
|!Field |!Description |
|title |Any title can be used, typically a system title starting with "$:/" |
|type |`application/x-tiddler-dictionary` to identify this tiddler as a [[data tiddler|DataTiddlers]] |
|tags |`$:/tags/Palette` to identify this tiddler as a palette |
|description |Description to be displayed in palette browser |
|text |Colour definitions (see below) |
The text of a palette tiddler consists of name value pairs like this:
```
foreground: #000
background: #fff
```