Lots of curtains - mainly black outs (Whitehawk BN2)

Hi I have lots of curtains,
Some are really stained but may wash out.

Have a selection of pencil pleat long mustard IKEA ones 145/250 6 panels, so 3 full sets of curtains.some less stained than others so could maybe make one ok pair, but they may also wash out I haven’t tried washing them. They are also faded from the sun