Thank you so much for the nice comments. Millie and Diane both asked questions---to answer them---
---Yes, you can lighten the color. You have to just add less dye and you get a lighter more pastel color.
---I used a kit from ProChemical that I purchased at the Puducah AQS show. If you go to their web site you can purchase one. It is $10.95 and you get enough dye for 30-1/8th yard pieces. The kit comes with a "recipe" for obtaining the colors.
The name of the kit that I used to get the colors in my Post is called "Prism" but I also purchased a kit called "Earthy Blend". "Earthy Blend" has three dye colors (Mustard yellow, Bordeaux and Deep Navy) so I think the resulting colors will be will result in navy blue's, gold's and deep red, and browns (I think).
The kits are a great way to get started since they come with complete instructions and everything you need in supplies to dye your Fat 1/8ths. It also comes with a list of equipment you need (ie: 31 plastic cups; Tablespoon measures, etc.) so there isn't any guess work.
There is also a web site---Fabric Dyeing 101 that has detailed instructions as well as lots of "recipes" for other colors. I plan on using several of these recipes in my next endeavor.
The fabric I used was White Kona Muslin, but I think next time I will see how the colors turn out using unbleached muslin (200 count). I know the color will be different, but it might be interesting to see. Either way, I am sure I will be able to put the fabric to good use, and dyeing is all about experimentation anyway.
Dyeing fabric is a hot weather activity, since the environment should be 70 degrees at least, so my plans for the summer will be to dye.
As I "make" more colors, I will keep you updated on my progress. If you decide to do the same thing, be sure and share the results with me. I am also going to try creating my own "recipes"--who knows, an entirely new color might be created :-)