ComfyUI: Day to night time-of-day transformation

ComfyUI Try it →Watch full video →Urban Decoders · Aug 2025

Demo summary

The creator shows how to prompt Flux Kontext to change a daytime architectural shot into an evening scene with ambient lighting.

Step-by-step

Input a daytime architectural shot into the Flux Kontext workflow
Enter a prompt specifying the time of day as evening
Include specific prompt instructions to make the scene not too dark
Add a prompt for ambient lighting to the generation request

Watch out for

Flux Kontext Dev has a tendency to make nighttime shots excessively dark

Tips

Prompt for ambient lighting to ensure the background is not pitch black
Explicitly prompt to keep the scene from becoming too dark to maintain clarity in nighttime scenes

All demos from “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture”

0:361:56Creative replacement with Flux KontextThe user demonstrates how to change a specific part of an image, such as replacing a building entrance with a glass door, using the Flux Kontext model in ComfyUI while maintaining the original scene context.ComfyUI· AI Inpainting
3:241:56Combine image references for furniture placementUsing the image stitch node in ComfyUI, the creator demonstrates how to take an empty room and populate it with furniture from a second reference image using Flux Kontext.ComfyUI· AI Image Combiner
5:200:53Change season to winter in architectural scenesThe demonstration shows how to use a text prompt to transform a summer architectural shot into a winter scene with snow on rooftops and trees using Flux Kontext.ComfyUI· AI Inpainting
6:130:34Day to night time-of-day transformationCurrentThe creator shows how to prompt Flux Kontext to change a daytime architectural shot into an evening scene with ambient lighting.ComfyUI· AI Relighting
6:471:52Selective inpainting with crop and stitchUsing the 'ComfyUI inpaint crop and stitch' nodes, the user demonstrates masking a specific window area to insert a glowing LED digital facade.ComfyUI· AI Inpainting
8:540:42Style transfer to watercolor paintingThe video shows how to use a reference image to transform a realistic house photo into a watercolor painting style using Flux Kontext.ComfyUI· AI Style Transfer
11:001:54Applying LoRAs for line drawings and Lego stylesThe user demonstrates stacking LoRA models in ComfyUI to transform buildings into line drawings or Lego-style structures using Flux Kontext.ComfyUI· AI Style Transfer
12:540:41Editing text on shop frontsThe demonstration shows how to use Flux Kontext to change specific text on a shop sign while maintaining the original font style and position.ComfyUI· AI Inpainting
14:250:55Applying texture references to 3D objectsThe video demonstrates applying a tiled pattern texture from one image onto a white sofa in another image, effectively performing AI-based UV mapping.ComfyUI· AI Texture Generator
Watch “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture” →

AI Relighting

6:130:34Day to night time-of-day transformationCurrentThe creator shows how to prompt Flux Kontext to change a daytime architectural shot into an evening scene with ambient lighting.Urban Decoders