The IDF uses a unique color called "Sinai Grey" on their AFVs. the issue for me is the color has changed or varied greatly over the decades. One would also assume the sunshine and heat of the sandlot would have an effect too.
There's a mobile app called "hobby color converter", I make no claims as to warranty or veracity, but I've found it useful to cross reference major manufacturers. The issue is, here's what it (the app) shows for Sinai Grey...
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So for my 2024 subject matter I think I can rule out the bottom three, as well as #2 and 3. But the remaining ones are not very close on color.
What would you do?