Buffscore and DoTs with their own buffscore can be seen. I have 2 Soul Shards and Dark Soul: Misery is active for 10 more seconds.
Agony and Haunt's time left has dropped below the offset that you can change in the options, so their texture changes colour to indicate that you want to re-apply them soon.
My DoTs have been applied with a buffscore of zero, but the current buffscore is higher so the numbers turn green.