I've got 2 profiles for this bookmark. There is a thinner 1.5mm thick bookmark and also a 2mm thick bookmark. The 2mm one has black added as the first layer which makes it thinner but also emphasizes the shadows. However, the 2mm one is a bit thick depending on the book you're reading!

Thinner 1.5mm Bookmark

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm

Filaments Used:
PLA BambuLab Matte Dark Blue Transmission Distance: 0.5
PLA 3D Fillies Purple Transmission Distance: 2.4
PLA Bambu Magenta Transmission Distance: 3.4
PLA InkStation White Transmission Distance: 7

Swap Instructions:
Start with Dark Blue
At layer #5 (0.48mm) swap to Purple
At layer #7 (0.64mm) swap to Magenta
At layer #11 (0.96mm) swap to White for the rest.

Thicker 2mm Bookmark

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm

Filaments Used:
PLA Overture Black Transmission Distance: 0.6
PLA BambuLab Matte Dark Blue Transmission Distance: 0.5
PLA 3D Fillies Purple Transmission Distance: 2.4
PLA Bambu Magenta Transmission Distance: 3.4
PLA InkStation White Transmission Distance: 10

Swap Instructions:
Start with Black
At layer #4 (0.4mm) swap to Dark Blue
At layer #7 (0.64mm) swap to Purple
At layer #10 (0.88mm) swap to Magenta
At layer #14 (1.2mm) swap to White for the rest.

Let me know if you have any questions and how you find the file!! I'm always trying to improve my files and forever getting more proficient at HueForge