The output of `invalidation_trees` is unreadable in Pluto

[bvdmitri]

The colors are meh and only make it hard to read, especially yellow. Specific to Pluto

[timholy]

I haven't used Pluto in a long time, so I could use some help in fixing this. There are only a handful of printstyled in https://github.com/timholy/SnoopCompile.jl/blob/master/src/invalidations.jl, so perhaps you could experiment and come up with a solution? It would also need to work in dark-mode terminals (which I suspect is the most common case).