Houston Calligrapher - Hunt for the perfect bronze Ink

I've been pretty swamped and haven't posted the last few jobs....must get better about that.   This project is for a wedding in NYC.  This couple opted for bronze ink in Ornate Roundhand on Crane lettra paper.  I love bronze.  Who doesn't love bronze?  I'm still on the hunt for the best bronze ink that has a minimal hassle factor, flows well and looks beautiful.  Today, I'm using Fine-Tec pearl color disks. They are beautiful once you dilute the disk down, but the hassle factor is a little high for me especially when you consider that you still have to mix after each envelope/line as with most metallics (that's why so many calligraphers charge extra for metallics).  I may have to return to "creating" my bronze (secret recipe).  We'll see.  These are beautiful though, aren't they?