I have the same rims (Easton Heist wheels) and mine came with a brown-coloured tape rather than blue. When de-mounting the tyres after a few months I found the tape had been coming away. Tried re-taping with superstars tape and couldn’t get it to stick very well as these rims have quite a deep centre channel compared to other tubeless rims I’ve used. Eventually bought some 32mm Industry Nine torch tape from just riding along and this stuff went on much better and have not had any problems since.
When it comes to tape widths, your best going with something that is approx. 5mm wider than the internal width of your rims to make sure it covers the full with and a little bit up the side as well, that way when you dismount the tyres it doesn’t pull the edge of the tape up.