On Thu, 13 May 2010 10:41:47 +0200, Sébastien Vauban <wxhgmqzgwmuf@spammotel.com> wrote:
> 
> Hi,
> 
> I would like to see more distinctively the separation between days in the
> agenda view.

[...]

> Friday     21 May 2010 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> --8<---------------cut here---------------end--------------->8---
> 
> where `xxx' is just some textual way to represent background color.
> 
> Is there some way to do so?

Not that I am aware of (although I would also like something similar).
However, what does work quite effectively for me in the meantime is to
customise the faces you mentioned by adding the underline attribute.
Although the underline also does not extend the full length of the
line, it does help make the dates stand out a little more without
being too heavy (and I say this as somebody that usually dislikes
underlines...).

HTH,
eric