I'm not too sure how the colours go after that.
(ungraded players of course have to go naked.)
This 50 draws limit will bring in new strategy as players
will no longer shun opposite coloured Bishop endings.
You can mate with opposite coloured Bishops.
You cannot do that with Bishops of the same colour.
Nonsense aside, as mentioned, sometimes draws can just be as exciting
(and indeed more instructive) than positive/negative results.
In the latter one player has had to play a mistake, in the former both
players are slugging it out toe to toe without a decisive blunder.
A book 'DRAW! II' is required as un update to Heidenfeld's book
which was first published in 1984/85 (round about then).