Replacing color edited gallery https://e-hentai.org/g/16346/1342d0c02e/

Color editing will remove JPEG noise, and the gamma comparison method may cause incorrect results.
https://images2.imgbox.com/d6/57/SjNiTaOo_o.png

So you have to rely on human eyes to judge.

If the color editing results in some areas becoming pure white.
Solarize can check how much white area there is in an image.
https://images2.imgbox.com/43/7e/kMXSNE1k_o.png

P006
https://images2.imgbox.com/af/15/a3DU63XG_o.png

P026
https://images2.imgbox.com/92/0a/1IrDUcFO_o.png

P217
https://images2.imgbox.com/cc/8a/PFeVeWtO_o.png