sketch inpainting

### Feature Idea

I just want to draw with color in mask editor to add elements for inpainting. There was this feature called 'inpainting sketch' in A1111, but it's still missing in ComfyUI. I don't really have enough VRAM to open the Photoshop or Paint to simply add color marks for inpainting.
The issue: I want to add transparent glass roses to the image, to improve the composition. I have a set of nodes for cropped inpainting, but the issue is that the image background is black, and I want to just add semitransparent blobs of red color to give the generator a hint of what it needs to draw.

### Existing Solutions

_No response_

### Other

_No response_