This pages shows statistics on aggregated ratings for each color of the set. The input comes from an aggregation done by _Concepcion (see the post on reddit - thanks a lot for sharing!) based on top pro player content.
Some insights derived from the findings below:
although everyone say that black is weaker than the other colors, it still has the highest aggregated rating - even at low rarity; black rares are the most powerful in average by far
however, black does need synergies to really shine, as shown by the aggregated floor ratings
green is as well extremely low on the floor ratings
conversely, green fares the best in ceiling ratings, showing the potential of the color
red has very consistent commons, positioned on the best place at both floor and ceiling
NB: gold cards are not considered here - leave us a note if you think it'd be relevant to add it either in the individual colours, or in additional tables showing color pairs