Hi, thanks for your quick answer ! =) And quick solutions too !
But you're right, I don't see what happened yesterday, where the two color were indistinguishable...
Or something went wrong, or I checked wrong, or I simply totally hallucinated !
But I see the turret clearly today, independently of artillery... Well, sorry for that x)
( I really should take the time to be sure the issue isn't between the screen and the chair, as we say ^^ )
And also for the range, I was biased because I wanted to see it, but in fact it wasn't for artillery but light artillery from Rampant ; For vanilla artillery, that wouldn't make sense, indeed ^^
Well, my own issues apart lol I also had another question which I didn't asked yesterday, I kept it for the related mod creator, because I don't think it can be solved from your part, but since you're here ! I'm using the "manual artillery" mod, [https://mods.factorio.com/mod/Artillery_Manual_Only] and it works almost perfectly, but sadly it removes the need for power !
That's it ^^ Thanks again ! Mod and considerations much appreciated ! =)