add image name into the drop down list

i have several images (say 20 )
 now if i click on that images i want to add that images name into drop down list
ex -
 imagess [red , black , green , yellow,..]
 now if i click on any image that image name must be added on drop down list
 how i can do this
 here is my old thread i want to inset that onclick event old thread

 
plz help



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