The cause for pale yellow skin could be many like
Excessive intake of carotenoid
rich fruits carrots, spinach, oranges, mangoes, plums etc
Excessive intake of lycopene
rich food like tomatoes
Excessive intake of vitamins like vitamin A
So basically these causes should be ruled out. If there is no underlying cause, then there is nothing to worry. Pale yellow skin is common in people of oriental origin also.
Hope that answers your query. Take care.