Like this?
This pic is over a year old. It was taken about a month before the car went down for its manual swap. With that swap also came the gray leather steering wheel and the gray trim around the column.
For the most part it turned out well. I avoided dying items that were touched often. I disassembled the door panels, recovered the top section with black vinyl, the center section is OE and I dyed the bottom. The headliner, dashboard, A/B/C pillars were all removed, disassembled and dyed. This allowed me to clean them properly, avoid getting the dye on the glass, and disassemble the pieces that I didnt want dyed (like the snap in trim pieces where the seat belts exit the cover. I left the carpet, seats, seat belts, center console and armrest alone.
All I used was lots of cleaning compounds, and then the 3M vinyl and fabric dye that you can pick up at the auto parts store. In the 3+ years that the interior was like this, it only required a couple of minor touch-ups.
I did it the easy way on my two most recent cars and just bought them with OE black or dark gray interiors.
And if you are planning on doing this with an SVT, be prepared for possible flaming when you post pics.