No the black swaybars are the softer of the two. I use the blacks most of the time. You can use them to tune a little from there. If the rear is too planted you can run the silver rear. And if the front seems to dump over too much you can use the silver front.

A couple carpet tips:

Glue the sidewall on the front tires. This will reduce the rollovers.
Start with 70wt oil 2 hole pistons in the front with a 5mm internal spacer. I'd start with a Blue short front spring and tune from there.
Dump the car low...like 2-3 mm max ride height.

In the rear I'd start with 50wt 2 hole pistons and yellow short springs(TRF Shocks) and a 3mm internal spacer. Ride height about 0.5mm higher than the front. A safe tire combo is S-grips up front and A slicks in the rear.