The need
Outlook is a crowded and confusing place. There are mails, meetings, tasks, contacts … in large numbers. We tend to get lost in this deluge of information. Incoming mails and appointment requests rule your life – Others are managing your time – not you 
Using color to categorize things visually can simplify this situation and put you back in control of your time and life.
Outlook Color categories
Inbox and tasks show categories by default (Outlook 2010 onwards) as a column.
Calendar also shows color categories.
25 colours available
Outlook does not know how you want to use the colors available.
You can and you SHOULD customize it…
Now you can use the colors in Inbox, Tasks and …
Calendar as well..
At a glance you can see how your time is being divided.
Try it NOW.
Tech Stuff
In case you goof up and create wrong categories, you can reset all to default by using a command line switch
…outlook.exe /cleancategories
