My plan was to do several gradations using Pro Chem's Basic Brown (one of the very few mixed dyes I use) in combination with yellows and oranges and reds. My gradations are 8 steps and result in OWG of 10%, 5%, 2.5%, 1.25%, .62%, .31%, 1.5%, .o75%. I basically start with 2 cups of dye solution that contain 20 gms of dye powder (about a tbsp and a tsp), dump one cup into the first pot (with one yard of 100 gm fabric), add a cup of water, dump one cup of that into the second pot etc, etc. I have gotten the overall process down with very detailed instructions.
My variation is adding a second color in different concentrations into the pots which will give you the kind of variation that you would see in Carol Soderlund's "rows" or "columns". (I highly recommend her classes for those dyers who want to get serious about color and predictability. You can do this by yourself, however, this would save you months of experiments and gives you a wonderful record of colors at the end.)
I also had a new "pure" dye to play with so had to do an initial plain old gradation using that. It is the "Burnt Orange" from Pro Chem and is is a kind of rusty orange in its darkest iteration and a pleasant toned down (almost fleshtone) in its lighter values. The above picture is the Burnt Orange gradation. I have decided not to overdye it as I do like the color a lot. It is not one of the "stronger" dyes but I can see a difference between the 5% and the 10% concentrations.
I then tried two more gradations -- one with a gradation of Sun Yellow values with the addition of 2% Basic Brown to each "pot". The other was a gradation of Mixing Red adding the 2% Basic Brown to each pot. I loved the Mixing Red/Basic Brown gradation and the Burnt Orange. The Sun Yellow with Basic Brown gives a gold that has a bit too much green in it in the darker values but it is a learning tool.
This is the Mixing Red gradation with the brown. I loved the deep reds I got with this (basically a 10% mixing red and 2% brown and a 5% Mixing Red and 2% brown.)
This was the Sun Yellow gradation with the brown added. It is even more hideous in person as the browns all look green and there is very little variation. These are all going to be overdyed with red today!!