Is it possible to fake a color that a person who is color blind cannot see or distinguish?

I do a lot of presentations to cactus & succulent clubs throughout the nation on nature's geometry in succulents. One day a color-blind person recommended that I not use red arrows and green arrows on the same slide because both colors looked the same to him. And certainly don't say, "The red arrow shows.... and the green arrow shows...." I took his recommendation to heart and changed my presentation to take that into account.

I saw a Steve Perry video about avoiding overexposure using blinkies. In the video he demonstrated that they only flash when at least two color channels are blown, not when only one is. This is usually not a problem, but for things like red flowers or sunsets, red might be the only important color and if you rely upon blinkies you can get weird results.

Also he showed how the white balance setting impacts blinkies, possibly giving a false reading if shooting raw.

Your experience with this?

To each his own. It's only my opinion. The decision ultimately depends on the OP. The reason for the articulating screen means nothing to me because I never use live view nor shoot video. For other purposes there is no difference. The main thing I like about the D7200 as compared to the D5600 because it has 2 command dial (main and sub). It makes for much easier to shoot in manual mode. The D7200 also can AF with screw driver lenses and meter with AI/AI-s lenses but these features while a plus is not that important to me.

Wow... what a timely thread, thanks! I'm practically at the same decision point as you.... and just about to post a similar question to "The Hog".
I've narrowed down the field to Benro FGP-28C(GO+) , Manfrotto 055 and Vanguard Alta Pro 2+.
Juggling between overall carry weight, load weight, max height w/o center column... AND an articulating center column, Manfrotto drops to the bottom of the list, with Vanguard right behind it.

Because I'll be using a large lens (200-500mm on D500), Benro load weight provides sufficient leeway for add- ons, and it's a good match for the Acratech GP-ss ball head I'm considering. I like the fact that the Acratech is actually "two heads in one" .... it functions as a ball and gimbal head. The 'GP-ss' model is pitched as a compact ball head compared to larger "GP" ball head, and the "-ss" model 2" base diameter will mate well with Benro 1.9" base. The only down side is my need to extend the center column a few inches to avoid crouching.

Thanks to you, and the Hog, I have my answer. BTW, B&H has a 'holiday saving' discount on Benro model till end of December.