community of dyers

Have you already set the Jacquard Acid dyes on your silk, using moist heat? If not, the liquid of the Green Label dyes is likely to dissolve at least part of the acid dyes that it touches, causing the colors to run together. Not that that's necessarily bad, if you're expecting it. If you did already steam-set the Jacquard Acid Dyes, or immersion dye them on the stovetop with heat and vinegar, then they should all stay in place when you paint on top of them. (Here are the instructions [PDF] that Jacquard Products provides for the acid dyes.)

The steaming step you're planning to use to set your Jacquard Green Label Dyes shouldn't do any harm to the Jacquard Acid Dyes, even if you've already steamed them once. Common recipes for steaming acid dyes call for a significantly longer steaming period than the recipes for steaming Green Label dyes.

Some of the Jacquard Acid Dyes are less wash-resistant than others. The ones that are in the class of leveling acid dyes (a.k.a. strong acid dyes or Kiton type acid dyes) are the least washfast of the different colors. If you've set the dye and rinsed out any excess dye, you should be fine, though.

Jacquard Green Label dyes are a brand of Remazol-type fiber reactive dyes which have had an acid and other ingredients already added to the dye mixtures.

Do you still have any thoughts about using Jacquard Permanent Dyeset Concentrate? Here's a relevant entry from my blog: "What is Jacquard Permanent Dyeset Concentrate? How does it work in silk painting?"

-Paula