Function hasColorNode

apps/sim/lib/pptx-renderer/renderer/background-renderer.ts:24–30

* Check whether a node contains a supported OOXML color node.

(node: SafeXmlNode)

 * Check whether a node contains a supported OOXML color node.
 */
function hasColorNode(node: SafeXmlNode): boolean {
  if (COLOR_NODE_NAMES.has(node.localName)) {
    return true
  }

  return node.allChildren().some((child) => COLOR_NODE_NAMES.has(child.localName))
}

/**
 * Composite a semi-transparent color on white so the result is always opaque.