[Inkscape-user] Colour of End Markers

Stupid question, for which I apologise, but can anyone tell me how to apply a coloured stroke fill to an arrowhead end marker? The line that it terminates is filled and stroked to my satisfaction and I'd assumed that end markers would follow suit, but no, they remain stubbornly black. I've searched 'Help@ and Tavmjong's splendid Inkscape Guide to no avail, so here I am with what must be an FAQ.

Peter HB