In February 1963, it was announced that the Queen had approved of the regiment becoming fusiliers and adopting the title of Royal Warwickshire Fusiliers from 1 May 1963. As a fusilier regiment, the Royal Warwicks were entitled to wear a coloured feather hackle in the headdress. The colours chosen by the regiment were royal blue over orange (described as "old gold with a touch of Dutch pink"). The colours were those of the Royal House of Nassau, recalling the regiment's Dutch origins.