'Fill' function with coloured lines instead of filling area

I'm trying to superpose two different things that I can easily draw with the 'fill' or 'patch' functions. Though when I superpose them the result becomes a bit messy and it is difficult to clearly see the two different plots.

Is there a way to 'fill' a region with coloured lines instead of coloring the whole region? My idea is to draw the lines in two different directions so that the two superposed plots can be seen?

Thanks

Answer 1

[Thorsten]

http://blogs.mathworks.com/pick/2011/07/15/creating-hatched-patches/

Answer 2

[Star Strider]

The File Exchange contribution hatch.m might do what you want. Other options are here.