On the flip side I would leave H if he stopped me buying fairy lights, we have plenty. I would still buy more, and have this season, I just find new places to hang them.
Put the cool whites in the porch or somewhere darker and get warm white for the window
Or as someone on another thread suggested, you can colour in led fairy lights with sharpie markers.
I bought a box (new box) in November of what said was warm white lights. They are were not they were cool, or at least cooler than I expected.
They are now pink, blue, purple, turquoise, orange, yellow, lime green and another blue sharpie coloured lights.
Much prettier do that, clearly the full random spectrum of colours would possibly not be your style, but what about a pale pretty pink, or pale orange, or bit of both?