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ColoringBook LoRA for Flux Klein 9B - Clean Line Art

LoRA for FLUX.2-klein-9B generating coloring-book line art. Trigger words, ComfyUI setup, and settings.

2 sources cited Training LoRAs

On this page

  1. What It Does
  2. Trigger Words
  3. How to Use
  4. Recommended Settings
  5. Training Data & Attribution
  6. Examples
  7. Common Errors and Fixes
  8. FAQ
  9. Sources

ColoringBook LoRA for Flux Klein 9B — Clean Line-Art Illustrations

TL;DR

What It Does

ColoringBook is a LoRA fine-tune for black-forest-labs/FLUX.2-klein-9B that shifts generation toward coloring-book-style illustrations. Where FLUX normally produces painted/composited images, this adapter steers output toward clean black-and-white line art: thin outline strokes, flat interior regions, and white or unshaded backgrounds — the format you'd expect from a physical coloring book.

Owl line-art coloring style

Trigger Words

Both are listed in the model card's instance_prompt: "ColoringBookAF, Coloring Book". Including them in your prompt activates the style consistently; omitting them degrades the effect.

How to Use

ComfyUI

  1. Download the .safetensors from the Hugging Face repo.
  2. Place it in models/Lora/.
  3. Load FLUX.2-klein-9B as your base model.
  4. Add the LoRA Load node → set strength ~0.6-0.9.
  5. Include ColoringBookAF, coloring book in your prompt.

diffusers / A1111

Point your LoRA loader at the file and the base checkpoint; the same trigger words apply.

Parameter | Value

|---|---

Base model | black-forest-labs/FLUX.2-klein-9B LoRA strength | 0.6-0.9 Trigger words | ColoringBookAF, coloring book Sampler | default FLUX Euler Avoid very high LoRA strengths — they can thicken lines and distort anatomy. Moderate weights keep the line-art crisp.

Balloons and river scene

Training Data & Attribution

Trained on a curated dataset of high-quality coloring-book images. GPU time provided by [Redmond.AI]. License: Apache 2.0.

Examples

Unicorn meadow scene

Common Errors and Fixes

Error | Cause | Fix

|---|---|---

No line-art style | Forgot trigger words | Add ColoringBookAF, coloring book to prompt Thick/distorted lines | LoRA strength too high | Lower to 0.6-0.8 Wrong base model | Used non-FLUX base | Use black-forest-labs/FLUX.2-klein-9B

FAQ

Q: Can I use it with SDXL? A: Not intended. It's trained for FLUX.2-klein-9B specifically.

Q: Is it safe for commercial use? A: Apache 2.0 license applies — permissive for commercial use; verify the base FLUX.2 license terms separately.

Q: What if Civitai is rate-limited? A: Fetch the model from [Hugging Face] instead; the same file is mirrored there.

Sources