Help ! Should I bleach the jacket ?!

[SuzieB]

I brought a cute little blazer/jacket this week and it's hanging on the door to my shower room. But while cleaning I splashed some bleach on it :( where the bleach has touched its gone a nice red/burgundy shade ! What should I do ? Should I bleach the whole jacket and if so how/much bleach should I use and what method do I use ? Will it colour up evenly or look patchy - arrrrrrrr I knew cleaning was evil !
Thanks for any help x
Suzie x