Can you reveal hotspot(s) to the learner in a lightbox?

I could change all my hotspots to markers, like you said, definitely an option, i am just trying to not populate the page with buttons and icons since there are allot, so instead I've carefully outlined each part that has a lightbox so it's clean looking.

The hotspots are colored with a translucent appearance so you can see the part that's hot spotted, that's why I'd like to reveal hotspots, to me it makes for a more organized, themed, appearance, with color coordination and no icon blocking any part of the image. I did try to put shapes/icons to indicate the hotspots, but they were just as bulky as markers or buttons and had no function. I'm stuck lol.

Thank you for the feedback!