CSS to make Coloured Scrollbar?

[Chuck1966]

Please can someone explain how to use CSS to define style and colour of
Inline Frame scrollbar e.g. on this page:
http://www.brunocavellec.com/Gallery1.htm

or point at somewhere to look for the "how to"?

 

[David Berry]

Please do not post your questions twice so it's easier to see all the
replies. This was answered as a reply to your previous post.