I see nothing while reading, not even if i make an effort. Instead I focus on the story, emotions and writing style.
I think that is one of the reasons why im not super into books which describe things in much detail, they are more likely to bore me because i don’t see them.
Whenever I’m reading descriptions of something i havent seen before, i can only see the rough shapes/colors of it, if i actively do that. No details. That applies to fiction, non-fiction, all reading levels and all languages i understand.
For the purple house, i would know that im looking for a purple house and look for it, but without having an image of some purple house in my mind while thinking about it. Also im actually good at remembering visual concepts I’ve seen, like routes on maps or mindmaps or graphs, things that have some logical connection.
As has been mentioned by someone else, I think that I’m close to an aphantastic experience.