LOL on the 'butter' comment, Jan!
I used Heidi's link to Ranger to check out all the DI colors available. I'm not sure how 'true' the colors show up, but that's always @ the mercy of our computers.
I have lots of gaps in my stash of DI (pads), but looking over them all--including this year's newbies--I see few that I would call 'bright'. I thot about it a bit & wonder if it isn't deliberate.
When I first acquired a few DIs, I was not happy with how they worked--coverage, etc. I expected them to work like my other dye inks. It took me a bit to understand that 'Distress' was an actual 'look'--faded, abraded, aged, etc.. I suspect that producing bright colors that look distressed may be problematic.
Like Heidi, I have Mustard Seed. To me it's a nice 'bright' yellow and 'FA' would not be a good substitute for me. But I could use 'FA' to shade 'MS'.
What I'm coming to terms with is that any specific ink's pallete is just that--specific to that ink brand. Doesn't mean it's incompatable with other brands, but not necessarily a replacement for all my other inks--in this case dye inks.
I'm grateful for this thread. As I pack up those inks I plan to take with me, I may just go through my older pads & save some of my old 'bright' dye inks. Most of them are from Hampton & I believe Stewart Superior was the mfr.