Things like this used to work to 'dynamically' change colours:

map @ feedkeys ":set recolor-lightcolor \#0a0a12<Return>:set recolor-darkcolor \#ff9900<Return>"

but now produces Unknown option: recolor-lightcolor

If change to:

map @ feedkeys ":set recolor\-lightcolor \#0a0a12<Return>:set recolor-darkcolor \#ff9900<Return>"

then I get Not a valid command: :et

Is there another way of accomplishing this?