== UI definitions ==

UI elements can be both loaded from Lua definitions or created on the fly.

== UI styles ==

Modeled after CSS but using pure lua.

Each UI element has:
* id value, might not be set
* type value, set by type database
* class value, might be set by user
* special modifier (selected, hover, etc)

{{{#!lua
default = {
  text_color         = { 0.3, 0.3, 0.3, 1.0 },
  background_color   = { 0.0, 0.0, 0.0, 1.0 },
  background_image   = "source:path/name/file.png",
  background_stretch = 
}
}}}