Where can I find light yellow fabric dye and how do I do it? ?

you can buy little pots of Dylon but not sure if chiffon can be dyed though, these are cold water dyes and need to be done by hand. The dyes l have used need to be done in a machine on a very hot wash so wouldn't suggest those for a delicate fabric. Have you tried looking on the website...just type dyes for Chiffon fabric and see what comes up. Good Luck!

get the lemon and use more water and less dye!! But overdyeing may not work the way you think it should.

You will never get an exact match. Dyeing is more an art than a science. Just consider how much difference there is in yarn of the exact same color, in two different dye lots. That's why, when you purchase yarn for a project, you purchase more than enough for the whole project, to avoid the dreaded change in dye lot. Now what is "chiffon?" I suspect most answers did not realize it is not a fiber type, but a weaving type. You can have a cotton chiffon, a polyester chiffon, heck a wool chiffon. Each is going to dye very differently, based on its fiber content. Each is going to require a different dye formulation, and each is going to react to that dye differently. But even supposing all three garments are made from the same bolt of fabric, the same fiber content and weave. They aren't starting out the same color to start with. It's not like paint chips that you can computer match. You have to guess, and mix different colors just like an artist painting a landscape has to mix different colors together to get just that shade of sunset peach. Can you stick it in the washer? Depends on the dye and the fiber content. Do the garment labels specify the garment can be machine washed? If not, then neither can they be dyed in a washing machine. If the fiber content is cellulose, then you don't dye in the washing machine because it won't have time to set (preferably cellulose dyes are held in place for 24 hours or at least overnight, much longer than one washing machine cycle). If the fiber content is protein or nylon, then you have to use hot water, hotter than what a washing machine can produce. You can still use the washing machine, but you have to boil water to pour into it. And what if, which is very very likely, the fiber content is polyester? You can't dye that at home.