is it just me or has anybody else noticed this about german japanese parents?

It happens, the dark skin can be from an abilty to tan that the Japanese mother doesnt lkme to do herself, she may prefer to be palemand use light foundation, she may also have the genes for naturaly darker skin though it may not show in the Japanese parent. Eurasians can look totally Oriental, totally White a 5050 look or an unlear look, some look Italian Spanish or Greek med looking. Also remember Mexican Mestizos are basically Eurasians themselves a mix of Mongoloid and Caucasian, so its no major suprise some half east Asian half Europeans may have that look.

Ive never seen a german japanese

mix in my life.

One of the prettiest little girls I have ever seen was English-Korean.

As for looking Mexican, to yellow. Most in my family look more like Native American which has more of a red caste.