Scorched the cuff of my son's brand new dress shirt to go w/his brand new suit. Hydrogen peroxide worked. I applied it, lightly ironed it w/a white pressing cloth (fabric) several times until it came out.

There's no way I would toss them. I would make the quilt and use it.

doomed blocks
 

I learned long ago that when blocks get discolored I help. That is to say I make a large pot of tea and put the blocks in the tea. This will give the fabric a tint that will bring all the colors together. My grandmother did this all the time as the feedsacks, even with the same fabric pattern would be a little off. The tea die brought them all together.
Any quuestions PM me

Try Efferdent!
 

I have recently gotten a couple of vintage quilt tops that are discolored and bled on another top I was working on - I was talking to my long arm quilter and she recommended Efferdent. Evidently, you put about 12 efferdent tablets in your tub and let it soak overnight (that's for a full size quilt top). She says it works wonders. I haven't had time to try it yet. Good luck.

My question would be, is it possible that the starch you used possibly have yellowed with time? If so, a gentle cleaning in the sink with regular quilt wash might be all that is needed, or I would hand baste them to a very light colored pillow case if I tried to machine wash them to prevent distortion. (Just a thought.)

You could overdye them another color--pink or blue, etc. That might cover the scorch.

I think I remember my home ec teacher mentioning a white vinegar and water solution for "scorched" fabric. Does anyone recall when irons actually got HOT, I mean really hot. The irons available now are kind of wimpy in the heat catagory. Just say'in.

Go ahead and finish your quilt, I did one years ago in a class and spilled my fresh latte on the white on white. Well needless to say it was stained but when finished I sent it to my son in Texas and said that there was a little taste of home on the quilt. He loved it and still does. So chalk it off to learning, it may come out and then it may not but someone out there will love it just the same.

I wish this board had a like button. You all have been so kind with your suggestions. I am making blocks again and will finish this top.

Finish the quilt and then after washing you aren't happy try tea dying the whole thing to antique it. Or use Rit dye if you prefer.