I already have a BEx query with exceptions defined to highlight projects that are over budget.
You can see in the above Analysis OLAP workspace that Analysis OLAP honors exceptions as "conditional formatting" - the flushing project is over budget.
I can send this to Design Studio by clicking the button shown above.
This is how it looks in a Design Studio application. You save the application in the BI Launchpad and open the application there.
The above shows how the application looks design time in Design Studio.
Notice at run time the conditional formatting from Analysis OLAP is not shown (i.e. the project that is over budget is not highlighted)
Back in design time, I select the Conditional Formatting property to True
Then Design Studio will show the project over budget in red (thus honoring the setting from the BEx Query)