gistfile1.txt

// Blue theme

<template name="blueTheme">
  {{> blueWidget}}
  {{> anotherBlueWidget}}
</template>

<template name="blueWidget">
  <span class="blue"></span>
</template>

<template name="anotherBlueWidget">
  <div class="blue"></div>
</template>

// Green theme

<template name="greenTheme">
  {{> greenWidget}}
  {{> anotherGreenWidget}}
</template>

<template name="greenWidget">
  <span class="green"></span>
</template>

<template name="anotherGreenWidget">
  <div class="green"></div>
</template>