When I got the new Boss pickups installed the caps were replaced I think, I don't know too much about them but I think they were the orange coloured ones?
The colour only really hint at quality at best. So the orange ones might be Orange Drops. Those are really nifty ones and I use them too.
However, there are two things when getting caps which you might think about mostly:
1. Brand and kind: Which brand is this cap from and is it your basic metal cap or paper in oil (or another yet). Some people swear by the paper in oil kind, like the BKP Jensens, and I do not want to dispute that, but I also have not confirmed their superiority for myself (the ODs certainly seemed nicer, but without proper testingI do nto wanne claim that).
What is certain though is that higher end caps, like PIO (paper in oil) usually are, have lower tolerance. Just as with pots and so that is a great thing. When you get a cap you can be pretty certain it actually has the stated value and not by chance almost (or actually) the next step in measurment.
For that reason alone a decent quality cap, like the orange drops, which ususally are not that overpriced, are a good idea, possible mojo aside.
2. The actual value you choose is also important, if the quality says you are actually getting that. It means differences in how much you roll off when you turn the knob down all the way. Personally I do feel that most caps end up being unusable when rolled all the way down. Just for those moments when you need a quick change and go from full on to all down I still want to have that be usable, so I choose lighter values. This also to me means that the usable range is much higher. Then again, the established values are that for a reason, they work well, even though they are not optimal for me.
Now this largely depends on personal taste and all, but it can also be easily tried out. Get a bunch of different value caps (just cheap ones which cost jack and do the job here) and put them in using crokodile clamps. Super quick change and you can figure out what you like.
Then when you found the one that feels best keep it for a bit, learn with it, then get a bette quality cap.
That way you really know you got the best one for your needs and once you do it can open up a wide range of sounds, especially on a tele and strat.
Also do not forget that the modern vs. 50 wiring plays a role here. Modern seems harsher to me in all responses to changes, while 50s changes the tapers and makes the pots really interact. Turn down the volume and the tone will react differently and vice versa. For versatility it is shockingly brilliant if your setup can register those changes, which a good brit pop one for example sure does.
