Your "hot pink" looks like "red" to me.
I can only dig up one 1988 "red" injector so far - too lazy to take a pic, but I will get to it.
Here's the pic I took years ago when I was up in CZ.
Pic from hIGGItrix:
Far right - 1988 FC turbo, "red", high-impedence, rectangle plug, offset key
Second from right - 1987 FC turbo, early, "purple", low-impedance, rectangle plug, center key
(If you're wondering what the two left injectors are, they are non-turbo, 460's with slightly different colored "orange" tops.)
The purple is light, but it's definitely purple.
It does turn "tan" with heat and age.
All the (Zenki) FC turbos I've worked on had these types of injectors.
The half dozen of Kouki FC turbo's I've worked on only had "red" injectors (with the oval plugs).
I've never seen purple ones on Kouki FC turbo's.
So call me liar all you want - I stand by my statements as I've seen through my eyes and experience.
You're right about the pic you posted - that one is obviously purple.
-Ted