Personally I like the new wire symbols, since they have different shapes that sort of look like 'R', 'G' and 'C' respectively. Though you can easily mod the symbols (just take a look at this mod's sources).
I was hoping Wube would make the 0 and O more distinct with 2.0.34, but it seems they just gave the existing symbols a new paint job.
In any case, I updated this mod so that it fits with the updated icons :)