Loop Forge

Recolouring a transparent layer

From Qwen-Image 2.1 Turbo, run locally

Frame from the Input: Dragon sticker layer result
Input: Dragon sticker layerDownload PNG0.7 MB
Frame from the Turbo, 8 steps result
Turbo, 8 stepsDownload PNG0.6 MB
Frame from the Base 2.1, 40 steps result
Base 2.1, 40 stepsDownload PNG0.6 MB
Output
1024×1024 RGBA
Turbo, 8 steps
24.1 s
Base 2.1, 40 steps
65.4 s
Turbo sampling
8, euler, trained sigmas (ManualSigmas), cfg 1.0
Base sampling
40, euler / simple, cfg 1.0
Seed
1234
Ran on
RTX 3060, 12GB (local)

What was wired in

  • Dragon sticker layer
    Dragon sticker layerRGBA, generated with Qwen-Image 2.1 in the earlier projectDownload PNG0.7 MB

The prompt

Download workflow
Change the dragon's body colour from green to bright orange, keeping its shape, outline, pose and the white sticker border exactly as they are. The image stays an RGBA image with a transparent background.

Notes

The layer goes in with its alpha, through a JoinImageWithAlpha node. The alpha that comes back overlaps the input's by 99.8% on Turbo and 99.7% on base (intersection over union).

Workflow: Base 2.1, 40 steps