Bittrex upgraded their new interface with a dark theme. I personally liked the old one alot better.
one of the most annoying issues with the new interface is that it does not show dollar values of tokens in btc market.
it also does not load the open orders and my order history by default so that takes an extra click. i understand the reason why they are doing the changes but they sacrificed ease of use to performance.
in short, it sucks.