Please help, faded jeans!?

Ok, i have these like unusual blue Levi's jeans, i got so happy i got em ,i started to wear them once i got em, but then unfortunately after 1 week, a drop of bleach fell onto it, now the color is faded in that 1 spot. i researched online on how to bring back the color without dyeing. and i got the result of using borax. will borax bring the color back? plz answer!