How do I change the colour and font of the window Title bar in Knoppix?

[winger9]

I'm booting Knoppix 7.7.1 from a USB stick, and the Title bar on the selected
window is rather indistinct. It's a sort of light grey clear-looking Title bar,
containing text that has an outline appearance, the outline of which is a sort
of pale white.

My humble questions are:

1. How can I change this to a more conventional blue Title bar, with white text?

2. How can I view other Title bar colours and fonts that I can choose from, and
how do I make the system use those?

3. How do I make the changes persist over subsequent boots?

Thanks.