concrete stain

[velvel and sarah kopp <kopp@kinneret.kinneret.co.il>]

Forgive me if this has made the rounds already - I didn't fond anything 
on it in the archives.

I am cutting down on finish materials for my house and am thinking to do 
a nice skim coat of concrete on the floors and skip the tiles or 
whatever else could be added.  I remember the posts about getting the 
concrete to look physically like tiles by impressing them with forms, 
but what about the colours?

I found three websites for companies that manufacture or "install" 
colours to concrete floors rendering them the look of tile, but 
so far none of them have answered my queries.  Their products all 
appear to be liquids that penetrate and stain the concrete with a 
nice mottled finish and are available in the US in a variety of 
colours.  Here in Israel I have heard of powdered pigments that 
are used in tile manufacturing for creating patterned tiles, but 
I haven't been able to run down a source and so far no one has heard of 
the liquid stains.

Does anyone out there have recomendations as to what can be used for 
pigments?  How to apply them?   

TIA,
Sarah