In the print profile is a negative part “hole” added. (not in .stl file)

If you want the bookmark without a hole so remove only it before final printT

Two version size models in one (same) profile, the first is size 50x150mm and the second is 65x200mm. The color change settings are identical. 

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm. You may print at higher layer heights below the Min Depth of 0.48mm The Max Depth is 1.6mm and the Actual Depth is 1.6mm. You can only modify the X and Y dimensions. Do not adjust the height (Z) in your slicer! 

These were my settings and colors for my print that you see in the picture. Your results may be depending on the filament you use.

Filaments Used:
    PLA Anycubic Black Transmission Distance: 0.3
    PLA Eleg.oo Basic White Transmission Distance: 7
This print uses 2 unique filaments

Swap Instructions:
    Start with Black
    At layer #10 (0.88mm) swap to White for the rest.