The elf doors at the shopping malls seemed so simple and dull, so I wanted to design my own. It's designed to be printed with varying colours with a one-nozzle printer. The last layers of colours should be at: 5.0, 7.0 and 10.0 mm so the first layer of the next colour is that height plus your layer height. This way you get what's rendered in the model image; base and door plank gaps in one colour, door planks in second colour, door frame in third colour (same as colour #1 in the rendering) and handles, hinges and ornaments in fourth colour.
You can either stand watch by your printer to change filament at the right time (it's a long print) or use e.g. Prusa's multi-color tool to inject automatic stops to the right levels. https://www.prusaprinters.org/color-print/
I failed to correctly set the stop heights, set them to the above heights, not plus layer height, so I only got one layer of plank colour, but it works fairly well anyway. Only a little "wear" in the bottom of the planks, which actually only makes it more realistic. The elfs have been lazy to repaint their door.
I'd love to see your versions, so please post your makes here! I used a no-name Chinese white PLA, Filamentive red rPLA and Fillamentum Rapunzel Silver. A light wood filament would have made a nice touch in the door frame, in retrospect. As in the stairs in the photo. Oh, and the stairs were designed by devonjones (https://www.thingiverse.com/thing:2283637), thanks for a great design!
Filamentive, Fillamentum PLA
Red, Silver, White