Agreed that one cannot judge the shade on a monitor. Lots of conversation in the past on this stamp and shades and I have personally posted a lot on this one. I have a bunch of pinks and rose pinks but every one is different and only way to know for sure is with expertizing and comparing known reference copies. Or possibly with analysis with high res scans.
In fact, I sent two of this issue to Bill Weiss yesterday....and I'll post the results when I get his opinions back I the mail....

I want to encourage you to continue to colect and learn, so good luck. But some things in philately must be done with expertizing and some with study, so I would also suggest you spend time with a Scott Catalogue, and online where there are some great resourced available to collectors. Since you've posted a lot of US classics, a good place to start could be the US Philatelic Classics Society site.: uspcs.org. there are some great references there for the student who wants to learn more and more.
Hope this helps...Ray