The Keda dies are good stuff.
EXPERIMENT! Get some black walnut and see what happens. You can mix colors too. I found that the black - PURE black, at full strength will make white oak look like aged, ammonia-fumed oak, which is NOT black. Yellow will turn wood CANARY-yellow, but sanded lightly and stained over with a darker oil stain makes the grain "POP," as they say. It's cheap enough that you can play a bit with it and see what you come up with.
My favorite has become the black on black walnut, for a much richer-looking walnut, without the dulling that oil stains can do to walnut. The yellow really makes the denser/softer wood contrast well and stand out, like flame-grained birch or curly maple, quarter-sawn white-oak.
Using a darker oil stain over the analine dyed surface will probably surprise you. I did a blanket chest in quarter-sawn oak with bald cypress panels with yellow on the oak and orange on the panels. Neither are the rails and tiles yellow, nor the panels orange. These colors lend a rich, warm hue, which shines through the oil stain.
IF you use WATER, use DISTILLED water. Alcohol is fine too, but I used water.
EDIT: FULL DISCLOSURE - I'm no finishing expert. My mode of operation is to try something and see if I like it. If I don't, I try something else, and something else until what I've made is complemented by the finish. Sometimes it looks exactly like I'd imagined, and sometimes it actually looks really good. I never know what a project is going to look like until it finds its way and show ME what it should be.
