Color Matching Help

[PBInferno]

One of my customers gave me a sample of a color that they want me to do, and I'm not sure what the best way to attain the color would be. The color is a kind of tan/beige with a hint of green. All the pics of it that I took made it look a lot lighter than it actually is, but I'll try to get some better ones later. Any ideas on what dye to use, what temperature to have it at, and how long to leave the part in it?

Thanks.

[acidrain]

Light tans are really hard to do. If you have all your parts hanging from a single rack, and can dip them all at the same time, it helps.
Typically I dip for a few seconds in one color, then adjust with a second color as the depth increases. Maybe start with yellow, then brown. The brown usually looks red-ish, so go to green next. If you have to do parts separately, time how long (to the second) you leave in each color. Do them all the first color, then all the second color, etc.
I've ruined many gallons of dye trying to create a custom color. That method is also hard because you actually have to dye a test piece in order to adjust the color of your custom dye. Besides that, it's better to have the original colors (in my opinion).