I always thought colour changes depending upon no. of comments but no it doesn't.
The colour of the thread determines its popularity and is not only dependent on no. of comments in it. So friends, to turn it into popular topic is also dependent on it's views and how many viewers will revisit the topic. Hence, if the topic makers and its viewers revisit, checks and comments, that will change it to a popular topic. 25 comments or 250 views whichever happens first will change the thread colour into pink.
No offence to anyone. But so many times I see here useless no. threads are opened, which remains icy blue due to lack of comment, revisits and views remains cold because they are made just to increase no. of threads in the forum and this is happenning repeatedly which is decreasing our views and activity points in ranking.Blue threads decreases threads to comments and views ratio. Which decreases views and activity points.These topics don't get repeated views or comments this hamper the activity and views points and decreases our ranking.Activity does not mean more no. of threads but more no. of active threads in the forum.