David asked recently about signatures: "Would you care to comment on placement of a signature/choosing a color for the signature." David, I would and I will. My opinion is to choose an out of the way location (a bottom corner is traditional but not necessary) and a color that doesn't overwhelm the painting. I generally use gray - something with enough contrast to the color it will go on - usually dark because that seems to draw less attention. Someone told me once they'd found a painting they just loved but didn't buy it because the signature was too "loud." That convinced me.