I went and change the style sheets for purple templates to test changing the defaults colors.
I believe I changed all of them, and I could not manage to change the color of the table (title) columns. I was able to change the text, background, text boxes, text area, table background, etc, etc, but not the table title columns.
Which stylesheet variable controls the table title columns (e.g. "Recent Photos", "Most Popular Images" , "Welcome aguilera". Not the text, but the background color?