Background color (background_color)

Secondary (mzp-t-background-secondary)

Tertiary (mzp-t-background-tertiary)

Dark (mzp-t-dark)
<p class="mzp-t-background-secondary">Secondary (mzp-t-background-secondary)</p> <p class="mzp-t-background-tertiary">Tertiary (mzp-t-background-tertiary)</p> <p class="mzp-t-dark">Dark (mzp-t-dark)</p>