My aged/stained finish that has been my most popular look, was indeed created using Clearwater gel stains, however it seems true that the Clearwater company has gone away and I have not found them available anywhere, even the sources already mentioned.
Currently I am using the liquid dyes available at Stewmac or Woodcraft. These seem to be compatible with just about anything under the sun, including water, alcohol, lacquer, oil varnish, etc.
None of these medium show the ease of application that clearwater did though so best of luck. I am looking for some kind of gel base in which I can add them but I haven't found it yet. I still have a little of the Clearwater clear extender that I'm using currently. I have found some kind of waterbased stain extender at Woodcraft (can't remember the name) and I have added the color to this but it doesn't seem to apply quite as consistently as the CW.
Still searching......
