I spent ages trying to colour match Pinkie. I've checked every pink I have (which is most of them) against the various Pinkie baits I have.... you know whats most frustrating?? 4 FS Pinkie baits and every single one of them had different coloured hair. I mean, not hugely noticeable, but noticeable enough when you are trying to colour match. Same with the 6 zillas I had in my bait box - all slightly different.
Heart Throb is close, but its not exact. The closest I got to Pinkie was a batch of custom dyed snowflake I did for Princess Pinkie (mostly rose pink RIT dye, with a tiny bit of wine RIT added, if I'm remembering my 'recipe' correctly)
I haven't checked MLC's newest nylon colours for a match, but I expect Elise could check that out for you