My opinion (without seeing pictures of course lol) would be to use the blonde color. It hearing you describe the look and colors I think that may be your best. But if you have a chance to snap a shot of the hallway and your kids' bathroom, I think that would help greatly in picking the perfect color.

Thanks, SJ. Yellow has never been one of my favorite colors and there is a lot of it on the wall. I was considering the multi-yellow though, but now that I've learned it's been discontinued, I think I will go with the light blue. Thanks for the mock ups, ilikefriday!

I would stick with nickel for all the knobs, in both rooms. Black will look very stark with your other options, and in your bathroom, the floor gives you enough darkness. Round is better than square for knobs because over time as they need to be tightened, the square ones get crooked. I like your third lighting option, which looks more sophisticated. I would wait on the bathroom mirrors until you see the completed space. At that point, it will be more apparent whether metal or wood frames are better, and what shape/size is best.

Keep the sconces and just get another rectangular mirror with a thinner gold frame. Like this one from Rejuvenation: