No there weren't. I don't know what sort of color coded Doom you were playing, but I'd wager MOST of the secrets didn't have visual queues. Especially in the later stages. Yes, some of them did, I am certainly not arguing that point. But not nearly enough.
Would you fucking lay off the G2A hate in this thread please? We already have a G2A hate thread, go bitch there. For a mod, you are really terrible about derailing threads. We get it, you hate G2A because the poor billion dollar company doesn't get their full moneyz. Wa Wa Wa. This is a thread about Doom, not G2A.
Anyway.
For as much as people are claiming this game has no story, I'm finding that it has just the right amount of story. And not just the main quest story, but the yummy yummy LORE about who you are and such. Loooooooove that part. SO COOL.
Also, haven't run into a Pinky yet. When do they come in?