Do you mark opponents with colors? Does it help?

NI don't have the habit of marking villains with colors, but I end up recording the name of those who stand out the most.

Honestly, I don’t use the note and color tagging features as much as I probably should — and I know it’s a missed opportunity. I tend to rely more on my memory and instincts during a session, especially when I’m only playing one or two tables. But in the long run, that’s not the most efficient approach.
There have been many situations where I faced the same player again and wished I had tagged or noted something about their style or past plays. It’s a habit I definitely want to build, especially for regulars or tricky opponents. Tagging helps turn small observations into real advantages — and that can make a big difference over time.

sometimes i collor people when i am sure they are try to bluff me to fold

I paused playing poker for a couple months and when I came back, lot's of players at my table were colored. So, yes. It definitaly helps

I always mark the sites that allow you to mark with colors, this helps when you play with that player again, you have a basic idea of how he plays.

I'll take notes for now. If I have enough of them and a corresponding sample size, there will be a color.

I play on the iPoker network and colour the clueless and maniacal blue and the savvy players red. All nuances in between I put in note form.