Heh - "little square ones".... Sorry Mate, not having a shot at you...
They are "Surface Mounted" components - in other words, they solder to the surface of the circuit board, rather than having leads which go though a hole in the board. They are quite tricky to solder in place, and you need to have some pretty professional level soldering tools to get the job done - along with the skills and experience to be able to use these tools. (my soldering iron is worth around $600 alone - the tips cost $35 each!)
I've said this over and over before, it's not a job that I recommend to people to take on if they haven't worked in electronics repair, specifically with surface mounted devices. The cluster must be stripped down to a base circuit board before the LEDs can be changed, and this requires a significant amount of DE-soldering - I have a de-soldering station (worth around $1200) to help me out with that. I have almost 30 years in the electronics industry, and I wouldn't take on the job without those tools.
The bottom line here, if you screw up your cluster, you're up for a furtine to replace it. Holden will not sell you individual components, you must buy a complete cluster. From Holden, they START at around $400 for a base model (Exec etc.) cluster, and the figure heads skywards from there. If it's screwed up, it'll be expensive!! (and still green!!!!)
Having said that, other parts of the job are quite easy - the switchgear and so on - quite do-able by someone with average "hobbyist" skills and tools - just not the instrument cluster!
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Seriously though, the cluster is a very sensitive instrument. There must be great care taken in stripdown and reassembly, and of course the re-work itself.
As for how the photos appear (your concern about the blue being too bright or something...) again, as I keep on saying, the photos can be misleading! Camera lenses play tricks, especially when shooting LCDs - before you finally make a decision on your colours, try and have a look at an install from somewhere - there are several out and about now, there must be a member of JC who's not too far from you who can give you a look over it? Also have a look at my website for some example photos of different colour combos.
:thumbsup: