Can you give different names for the same unit? Then, siege tanks are called tank AA for player 1, but for player 2 theyre called tank BB.

If you mean giving one unit multiple names, No, you'd have to use different units

Best you can do is using the hero equivalents. They can of course have a different name.

yeah but fortunatly, theres a ton of ghosts that u can name different things

u got the normal, duran, infested duran, kerrigan, and stukov

Ghosts and BCs, except for both, some of them can't be created via triggers, only preplaced.

How about showing the unit name in 1 specific colour?

Nope. Name for each unit has to be exactly the same for all players.

Color tags are part of the name, in case you haven't noticed...

i think the best you could do with that is modify their health to change wire frames from player to player, but thats not exactly what you're trying for

And both DuGalle and Mengsk ships have the same stats (Save HP/Armour).

About the player colour as it shows in the mini-map, for the human player, I thought that it's the same colour as the units.
But its always the same colour, regardless of unit colour. Has this changed with a patch?
How to make the same colour in mini-map as the colour of units ?

I'm not exactly sure what you're asking. If by human player you mean your units, then your units will always show up as neon green in the mini map and you can't change that. The other players should show up on the minimap as w/e color the units are unless...--> If you mean you've changed player colors in an editor and they're not working right in game, you need to save the file as a broodwar map (.scx). And if you actually mean what your question seems to say and your units are one color on the map and a completely different color in the mini map then I had no idea that was even possible and hopefully someone else can help you.

That's what i meant, that first thing you said. maybe i ve been working too long with the editor..

http://www.staredit.net/files/464/ thats fartys player color index, i use it al the time

there are a handful of colors that are different on the mini map then on the game

you should be using SCMDraft to change the colors though, and for them to appear on the game correctly, you have to have the game saved to .scx