Some thoughts on dyeing your gold's and yellow's......... Remember the less of your gold/yellow you add the more subtle your shade will be. Old Gold is my favorite "ingredient" for a good mustard. Light Brown or Tan drabs down any of your Cushing's yellow/gold's, or a yellow wool. This would be an as-is wool or one that has gone a bit bright during the dye process. Just grab any yellow or gold and try it with Spice Brown for a nice warm shade of mustard. Bronze brightens up a mustard formula for pizazz, but just use a little.
Say you have a piece you want to dye, why not tear it in half, add one piece at first then your second piece about half way through, right before you add your vinegar. This will give you 2 great pieces to use together with a bit of color variation too. Enjoy & more next time!