LLM text is token based not pixel based. And LLM output is ~1K tokens, while a picture is ~1M pixels.

And pictures aren't necessarily made of pixels. They are modelled as a collection waves (JPEG), and displayed as pixels. I don't know how LLM/whatever image models represent images, though.

Images are more global: changing the color pallette changes the tone (ha!) like a descriptive word in text.