Violet and green combined can become muddy.
Yes, I meant wrapping each half of the elipse. (Sorry, but it was late and it is a hard concept to explain!!) You can use any type of squeeze bottle, but be certain the yarn is not soppy wet with dye or you may get too much bleeding. I keep towels/rags handy and blot up any excess. You are right, this does give you more control. Also, depending on the size of the skeins, you can do multiple skeins together.
Do you have a scale? I have a kitchen scale that weighs ounces or grams. I carefully weigh yarn/fiber and dye. I convert to grams for more accurate weights. Having accurate weights generally means that the dye will exhaust and will rinse clean. One ounce =27 grams. Depending on the intensity of the color I want I use 2-4% dye for the weight of the yarn. So if you have a 4 ounce skein that = 108 grams and I would use 2 grams of dye - or 4 if I want deep color.
If you are on yahoo there is a GREAT group called Dye Happy.
Thank you for the compliment on my yarns. I am truly a fiber/dyeing junkie!!!