Hi there,
I agree with all replies so far.
Basically the veniard fl orange is just a mix of fl yellow and fl pink - better to mix your own orange I find. You will find that you can only use the dye bath once with a fl orange ready mix as a lot of the time as basically if all the fl orange is exhausted into the materials in the bath you will be left with a pink dye bath. Simply because the yellow is sucked up first and the stronger pink remains. You can actually add some fl yellow to the bath to get your fl orange back again and reuse the bath. Sorry if I am confusing you
Its just trial and error really, the more you practice the better it gets.
Please let us know how it goes with the feathers.
Sam