Recolour a single occurrence of a recurring appointment in Outlook 2010

Brief: Recolour a single occurrence of a recurring appointment.

I have the following recurring appointment:

Subject: Maths 104
Date: N/A (series)
Time: Thursday 12pm
Recurring: Weekly (4th March to 6th June)
Importance: Normal

I want a single occurrence of this series to be a different colour.

Subject: Maths 104 (Test)
Date: 17th April (occurrence in series)
Time: Thursday 12pm
Recurring: Part of series above
           (deviates because of subject and importance change)
Importance: High

I'd like this occurrence to be coloured red in calendar view!

I tried:

• Adding a category to the occurrence: Doesn't work, category is series-only.


• Conditionally formatting for "Test" in the "Subject" field: Doesn't work!


• Conditionally formatting for high importance: Doesn't work!


• Replacing the occurrence with new appointment with appropriate changes: Worked!

I do not like this solution, however, as the appointment is not part of the series; this means I have to check every week when I change the recurring time and location details.

Is there any way to do this in Outlook 2010?

Also, the conditional formatting in Outlook 2010 seems to look at the series only; even if the occurrence is different, it will look at the data of the series.
Is there a way around this?

Please help! Thanks.

P.S: I've Googled for a solution to no avail.