I recently acquired Michael McNally's Helion volume St Ruth's Fatal Gamble on the 1691 Aughrim campaign and the end of the war in Ireland. It has a depiction of the colours of Cambon's Huguenot infantry regiment as carried at the Boyne in 1690. The book says (p.282) "the reconstruction has been based on the relevant section of Jan Wyck's painting of the Battle of the Boyne, in which the crossing of the third battalion of the Huguenot Brigade can be clearly made out, together with the unit's white colonel's colour and a blue company colour which has golden decoration in the canton on the upper hoist side". I have examined a reasonably high resolution digital version of the Battle of the Boyne painting and cannot find the regiment as described! But apparently there are many versions of that painting and perhaps I have not found the one that shows the Huguenot regiment as McNally describes it...
Here is my version of the flag set as reconstructed in the McNally book:
