Initial Release (12)

Theme concatenation via gradle plugin

res/values/themr.xml

<style name="PaletteLight">
  <item name="brandColor">#008577</item>
</style>

<style name="PaletteDark">
  <item name="brandColor">#000000</item>
</style>

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  <item name="colorPrimary">?attr/brandColor</item>
</style>

build.gradle

themr {
  combinations = ["AppTheme": ["PaletteLight", "PaletteDark"]] // map of themes to palettes
  source = "themr" // res/values/ filename to scan for styles, defaults to themr 
}

Generated styles

<style name="PaletteLight_AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  <item name="brandColor">#008577</item>
  <item name="colorPrimary">?attr/brandColor</item>
</style>

<style name="PaletteDark_AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  <item name="brandColor">#000000</item>
  <item name="colorPrimary">?attr/brandColor</item>
</style>