Anyone dye their veil ivory using tea? Tips?

Costume designer here. You're going to want to make the dye several shades darker than you want the veil. Tulle is typically polyester, nylon, or a mix of the two. They are synthetic fabrics and, as such, don't dye in a technical sense as dye has to seep into the pores of the material, which synthetic do not have. So you're basically trying to stain the outermost fibers OR you have to heat the fabric up to the point where the fibers are just starting to break down enough that new colors can be incorporated. Tulle can be tricky though as it melts at a very low temperature. Your best bet is to boil some water and vinegar (the chemical makeup weakens fabrics to help them take color) and put the veil in once it has cooled below boiling but still very hot. As a previous poster said, you will definitely need to move the fabric around a lot to prevent the color from pooling in areas and making them darker than others.

If the dye route is not working, you might try Rit Dye. They now make "DyeMore" for synthetic fabrics. There is also a product by Design Masters called "Tint It," which is a spray-on dye. A lot of cosplayers use it to color synthetic wigs because it colors the fibers without making them stiff or tacky.