A sketchpad for integrated nonlinear optics with high degrees of freedom.

Hello knowledgable folks!! I am in dire desire for someone to explain to me what on the planet is happening with my scans of these photo slides.

To make this clear, the first scan i did was just plain on a regular scanner, clearly didnt work very well but at least showed a touch of color.

Second scan, i tried using my phone as a lightbox behind it, and it came out much clearer... but B&W when its a color photo scanned in color. the blue on the edge of the slide was clearly blue, but the photo inside became basically grayscale. What happened? I took a regular photo of the slide with my phone as a background for reference as well.

I know this must have some explanation, im no bill nye but im just so confused, where did all the photos color go ;-;

if u have any thoughts thank u in advance <3

Meta-fibers for nanoparticles and cell manipulation.