On Monday, July 11, 2011 10:25:55 am Cecil Westerhof wrote:
> I am using ConTeXt to make documentation for a webbased 
application. (100+
> document) Last week they showed me another document with 
used a kind of
> rainbow (but completely filled at the upper part) for the 
page header and a
> 180 degrees rotated one with different colors for the 
page footer. Now they
> want me to do the same. What is the best way to do this?

Many programs will create multicolor gradients. I would use 
Gimp. But Scribus, Krita etc. are also candidates. 

I suggest this tutorial if you are new to Gimp:
http://www.tankedup-imaging.com/gradient.html
-- 
John Culleton

"Death Wore Black" Police procedural: 
http://www.deathworeblack.com/

"Create Book Covers with Scribus"
http://booklocker.com/books/4055.html