Telly,
I use the fairly common padded foam tape ,
top brand , Cinelli has a few bits of cork in the mix of the foam plastic strips. lots of color combinations too..
I have not used the big C stuff, but it is the type..

2 layer, older tape goes on the bottom..
paper peel off adhesive strip is one way the stuff is packaged, now..
the Gel / foam tape .. applies a strip of stuff that is not adhesive per se, not much of a cushion either,
but makes the back-center strip tacky enough to not slip.

re: black.. there is always spray paint in a rattle-can