(whoops,didnt read your question well)
That is not possible in any engine I know of.
However,you could use Wally and fimg
Fimg to convert textures and wally to edit them.
Make a wad and use one texture for each part of your map.
Like for castle you want a weird pink sky with Shimmer And Shine logo and you want to ad_swampy ripoff section to be bloody sky.