I agree with you about earlier things. Why it should be so consistent with rest of stuff on Realm? It's modder's choice what he will add or not.
Plus, as far as I know, the color scheme hasn't been done before (although I've spotted similar sprites a couple of times in the trailer for Russian Overkill, but that just goes to show that at least someone had the same train of thought as me).
Funny enough, I had red medikits with white crosses, but it was only short-time replacements. I was looking for some techy-looking health pickups, think of ASMD ammo in UT2004 or UT3. Anyway, I've gone for more arcade style, making differently sized and colored health symbols. You can easily tell which gives what amount of hp, heh.