Using Stable Diffision models for Colorization

[Dan64]

Please add a new feature to the Fix Image pipeline.
Proposed Workflow:

• Step 1: Load a pre-colorized image to act as the primary color base.
  
• Step 2: Select a new reference image that you want to colorize.
  
• Step 3: Perform the colorization on the reference image, but strictly guide the colorization based on the palette and tones of the already loaded colorized frame.
  
  

I have tested a similar workflow in ChatGPT, and the logic works well. I hope we can implement this

I added the new Tab "Fix Colors" to the project HAVCServerDiT



Using this tab it is possible to propagate the colors from the Reference Image (on the left) to the Target Image (in the middle). The resulting colorized image is shown on the right.

The best model to perform this color propagation is CMNET2 which is the model used for this colorization. In case the color propagation is not satisfactory, it is possible to use the button "Copy -> Fix Image" and the colorized image is provided as input to the Tab "Fix Image" where it will be possible to use Qwen-Image-Edit to apply additional color adjustments.

Dan

P.S.
Please update the code as described in the README