Paint job question: Guinea Blue?

[XL2000]

Hi all, this is my first post on this so far very informative forum.
I have a question for you. My girlfriend and I are in the process of acquiring a Late Bay which will be restored including a new total paint job.
We wish for an authentic VW color, best described as "pastel light baby blue".
Together with a Pastell white top.

So far we came to Guinea Blue (LH5K) like Mitchell has in this post:
https://www.thesamba.com/vw/forum/viewtopic.php?p=8876346#8876346

Combined with L90D white probably.

But looking at other pictures on the internet, there seems to bee multiple shades of Guinea Blue around
Can someone point out if the color in the above post is the correct shade in the pictures?
And is this color still available also as touch-up? Or are these specs known to have this made as custom paint?

And maybe even more: are there colors we might be overlooking here which are also "pastel light baby blue"? Like Brunswick Blue (L10018) maybe?
Its hard to get consistent and decent pictures from the web, and we don;t want to send the painters on a wild goose chase...
Any help, tips, thoughts are much appreciated!