Is it possible to make a gradient colour with CSS or Javascript ?
Good question
I found a couple articles...
http://hotwired.lycos.com/webmonkey/97/33/index1a.html?tw=authoring
http://www.xentrik.net/css/filters.php
Both say "so far only supported in IE4."
Now it's been awhile since IE4 was the best and brightest (if ever, arguably) so it's hard to say what the current compatibility is like. If you're interested, send me a link to a page with the gradient you want to test and I'll run it through BrowserCam to test compatibility.
Gradient Colour ?
Excellent links ! I am going through them 
Gradient Colour ?
Filters are an IE-only thing.
I know CSS-3 is going to have opacity and a full color object. Not sure if that includes gradients or not though...
Aside from that - background images....
Gradient Colour ?
yes I am looking forward to CSS3 and its implementation in browsers. I had a look at the features last night and its going to be good for the Web development world.
Gradient Colour ?
Agreed - I can't wait until we can use it. There are some things in the specifications I think a lot of people have been waiting for. Unfortunately we won't be able to for several years (because IE6 will probably be our new NN4) unless we either convince the world to use compliant browsers or convince Microsoft to update IE6 
From what I understand, IE6 is the last standalone version of IE that will be available. From here on out, future versions will only be available as an embedded part of their next Operating System... Which means IE6 becomes our new lowest common denominator for designing sites. 
On the positive side, at least it's more managable to cater to than NN4...