Loop Forge

Grayscale market

Works, from LTX 2.5 Creative Lab LoRAs, tested locally

Frame from the Grayscale input result
Grayscale input
Frame from the Original colour result
Original colour
Frame from the Colorization LoRA result
Colorization LoRA
Watch it in the video at 1:54
LoRA
Colorization at 1.0
Output
1152×640, 121 frames at 24fps
Sampling
8 steps, euler_ancestral
Seed
42
Generated in
10 min
Peak VRAM
11.0 GiB
Ran on
RTX 3060, 12GB (local)

What was wired in

  • Grayscale market
    Guide video
    Grayscale marketA generated market clip, desaturated with FFmpegDownload MP43.7 MB
Works

I took a generated market clip, turned it grayscale and gave that to the LoRA. The colours it picked for the fruit, the vegetables, the awning and the clothes came out close to the original.

Reference shows a market stall under a striped awning where a bearded vendor in an apron is arranging fruit in wooden crates while a customer in a headscarf reaches for lemons, with a busy market crowd behind, rendered in monochrome under soft daylight. Edited shows the same scene with natural colors restored. COLORIZE a green and white striped awning, bright orange oranges, red apples and yellow bananas in pale wooden crates, the vendor in a blue apron with a grey beard, the customer in a dark red headscarf and coat, warm natural skin tones and a muted colorful crowd behind. Subject identity, framing, and background geometry are identical to the reference; only color information differs between reference and edited.

Notes

The trigger is COLORIZE. The colours you name in the prompt are the colours you get.

The Colorization LoRA on Hugging Face

Run it yourself

Download everything for this test (.zip, 3.8 MB). It holds the workflow, every input it loads and a README. Copy the inputs into ComfyUI/input, put the models below in place and drag the workflow onto ComfyUI.

The Lightricks repositories (the LTX 2.5 base model and the LoRAs) are gated. Log in to Hugging Face and accept the terms on each repository page before downloading.

Custom nodes: ComfyUI-LTXVideo at commit 3bf3ca6. Everything else is part of ComfyUI 0.37.0 (commit 0f74f7fb, frontend 1.53.6).