Storm winds snap and roar because of the rigging, flying flags stretched taut, their colours fierce in opposition t a slate-grey sky

https://landenbaio358.valoradigest.com/posts/valley-forge-and-beyond-the-flag-george-washington-flew-within-the-fight-for-freedom

Storm winds snap and roar through the rigging, flying flags stretched taut, their colorings fierce in opposition to a slate-gray sky.