YOU SAID:
I like peanut butter when it is yellow.
INTO JAPANESE
私はピーナッツバターが黄色いのが好きです。
BACK INTO ENGLISH
I like my peanut butter yellow.
INTO JAPANESE
私はピーナッツバターの黄色が好きです。
BACK INTO ENGLISH
I like the yellow color of peanut butter.
INTO JAPANESE
ピーナッツバターの黄色が好きです。
BACK INTO ENGLISH
I like the yellow color of peanut butter.
That didn't even make that much sense in English.