I doubt that there has been much of a change since the time of Newton. One thing that has changed is using computers to solve the problems. Riemann Sums is a nice way to solve integration problems and, given a couple of hundred thousand steps, is quite accurate. Maybe it takes a couple of seconds to do the calculation?
The Calculus probably hasn't changed but I'll bet the presentation has. Calculus described for math majors is different than Calculus described for engineering majors. University of Florida has this dual track approach.
Lots of color graphics will be found in modern textbooks. Not so much in older versions. Nevertheless, I buy a lot of used books and perhaps they don't have color graphics but at least the price is right.
Stewart 8th Edition has color graphics, CME has none. I think color graphics brings a lot to the dance. Sure, I got along without them 50+ years ago but I would rather have them than not.
Having coded Riemann Sums in Fortran, all I have to do is replace the function and I get the area under the curve in less than 2 seconds. Of course, that gives a numerical solution, sometimes we want an analytic result.