Finding a Half Brother?
I would try ancestry.com . I would start a tree with you, your parents and your brother and see if you got a hint . You can just list him as an unknown son under your dad or you can try possible family names or names or names you just think might be something...
Decorating a Small Foyer?
You could get some foam to bring a pictore, or the aforementioned initial away from the wall to cover the box. They have inotials that have lights that you could paint. You could paint vertical grey stripes on the yellow wall by masking them off with painters...
How Long to Wait Before Re-dyeing Hair?
I think you can do it now. I would use a permanent dye. There is a new spray temporary coloring agent, i think by clairol, that works great for roots between cokoring
