Well this is all part of the fun!! (Sorry, did I say fun!).
Firstly you don't want anything too different as it could affect the resale in years to come. Secondly you don't want anything too pale as it may not wear very well.
Mine is as fresh as when it was installed, but my car does not have much use apart from my wife and myself (kids have long since left home!).
I have small perforations, which I believe is their standard. You could consider a DARK BLUE all over with LIGHT BLUE contrasting stitching, BUT; as the main facia area is BLACK you may feel it will not look right as it could clash.
I considered several combinations, including BLACK SIDES with DARK RED centres and DARK RED STITCHING. I settled for ALL BLACK with SILVER STITCHING, and I'm very pleased I kept it simple as (I think) it looks great, matches the facia and seat back centres, centre tunnel, door cards (only the centre that is currently velour is trimmed in leather - the remainder stays black, as do your seat belts!).
Have a look at the posted photos, hold the leather swatches against your car both inside and out, ask TL if they have any photos they could email you.
You won't get much sleep tonight, will you.
Oh, decisions, decisions! Good luck.
PS: Remember, your carpets are BLACK as well!!