Prints nodes that have fill/stroke colors that aren't linked to a style.

print-unlinked-colors.ts

figma.root.children
  .flatMap(pageNode => pageNode.findAll(n => true))
  .forEach(node => {
    if ('fills' in node && 'fillStyleId' in node) {
      if (node.fills !== figma.mixed && node.fills.length > 0 && node.fillStyleId !== '') {
        print(`${node.name}'s fill color is not linked to a style`);
      }
    }
    if ('strokes' in node && 'strokeStyleId' in node) {
      if (node.strokes.length > 0 && node.strokeStyleId !== '') {
        print(`${node.name}'s stroke color is not linked to a style`);
      }
    }
  });