Hi,
The red color traffic light indicates that your aggregates have to be done "intial fillup".
Select the Aggregate and click on "Intial fill" button on top where all options like intial fill, switchoff/On queries, Delete buttons exist.
When you click on intial fill-->A new window will open with the aggregate inside-->Slect the aggregate
-->Execute/Start immediately-->Then the Initial Fillup job will be started. You can find a job log button in the same window.
After the job finishes, traffic light which is red will turn to Green.
Regards,
Suman