The skins are placed into the Skins-folder. Each skin must be in it's own subfolder. The actual skin-file is a normal ini-file with several sections that define the skin's shape and the things it measures and displays. The skin's subfolder can contain several ini-files, but only one of them can be active at the same time. This allows you to for example supply localized skins or different variations of some skin.
Important: Do not use spaces in the name of the folder or the ini-files.
The skin's ini-file is divided into four parts. All the general settings are put under [Rainmeter] section and the variables in [Variables]-section. After the general stuff comes the measures, which do the actual measuring. After the measures comes meters, which are visual representations of the measures. It is possible to bing many meters for one measure.
The variables are keywords that are replaced in other settings. These can be used e.g. to gather user defined values to the top of the config-file so that they can be easily changed. To use a variable just surround the keyword with '#'-chars.
These must be put under [Rainmeter] section.
Background
Name of the background image. If this is omitted a copy of the
desktop is taken and used as the background for the meters. Pink color
(255, 0, 255) can be used as transparent color. You can use BMPs, JPGs and
PNGs (with alpha channel!)
BackgroundMode
Defines the background mode:
SolidColor
If the background mode is set to 2, this defines the color of the
background.
BevelType
This draws a bevel edge around the solid background. 0 = no bevel, 1 =
raised, 2 = sunken.
Update
The update time for the meters. The value should be given in milliseconds.
The default value is 1000 (i.e. one second).
Author
The name and email of the author of the skin. The string is displayed in
the about dialog.
AppVersion
The minimum version or Rainmeter that is needed by this skin. It is not
necessary to define this if you don't want to. The version is a single
number that can be calculated like this: Major * 1000 + Minor. E.g. a value
for Rainmeter 0.11.4 would be 11004.