I tried the hair chalk tonight. I am sure that I did not spend enough time or do it the proper way because I have the attention span of a three year old. I did get the chalk wet and rubbed it on my hair and then straightened my hair to "set" the color. I can tell some places but it's not what I thought it would be like. I may try more later.
Here are a few other pictures taken with my cell phone (above two were taken with webcam)