How to get rid of orange bleach stain?

The times I've done that, washed all my kitchen surfaces with bleach the leant over the sink to open a window!!!! The best idea I can think of is to take the garment shopping with you and try to match the colour with a marker pen. Felt tip or indelible. Failing that, put a little bleach in a saucer and get a fine paint brush like a childrens' one and design the tee shirt with circles or flowers. Put the tee shirt on the floor, flat, insert a newspaper to prevent the bleaching pattern to go through to the back of it. This is what I have done to many spoilt tee shirts and they look very attractive and of course, they are unique.

Once you bleach the color out of fabric, you can't "remove" the mark--it has taken the dye out of the cloth. You can try using a permanent marker to color in the stain--that might work for you, but you'll probably have to do it again after re-washing as it will fade and lighten over time.

The bleach has stripped the colour from you shirt , unfortunately there is nothing that will bring the colour back other than re-dying it....................