Have a look at the episode that Holice Turnbow did on marking on quilterstv.com .It is in the section about 'Quilt as Desired'. He shows a number of markers including the ceramic one which I find useful. I use silver, chalk and ceramic pencils on dark fabrics - each is effective for different reasons.

I use an old piece of bar soap.

I save slivers of good ole soap. Washes right out.

I vote for soap, I've used it for years. for basic sewing and quilting.

I am working on a project with black at the moment and I am using my Fons & Porter pen with pink lead in it. I really like how the pen traces and it stays on great until you erase it. I use it all the time to do all of my markings. It comes with white lead when you purchase it and that would work great on the black also.

I have Fons & Porter chalk pencils that come in a variety of colors. The white one works great on dark colors. If I'm not drawing through a quilting template, I often use a sliver of soap for straight lines. For hand quilting, if nothing else shows up, I just use a piece of masking tape to quilt beside for straight lines. You can move the piece and reuse it a number of times.

I've looked at the Fons&Porter lead pencils that you can get refills of the leads in different for marking my quilts for hand quilting. Has anyone used those? Do they work well and wash out okay?

My favorite marking tool on black or dark fabric is the Fons and Porter white mechanical pencil. It marks in a fine line and the eraser on the end actually does erase if necessary.
I've used chalk pencils, silver pencils, and every type of white pencil imaginable, but this one is the best by far.

I use the Clover white marker,,,,, the marks stay on very well and they go away with the swipe of a steam iron.

I use all of the above at one time or the other, I also use the dressmakers transfer paper and tracing wheel.

A old(thin)bar of soap.