There is no discoloration of skin after gall bladder
It may just be a coincidental perception by you.
You will have deranged liver
function tests if you have jaundice
Since your liver tests are normal as just mentioned by you,you don't have any jaundice.
More over you will have symptoms like nausea
,loss of appetite,weakness,yellow urine if a person suffers from jaundice.
Don't worry and relax as you don't have any jaundice.