I recently did a report for a client who could run the “same” report (a customer monthly statement) for any one of five separate companies that they own (in this case they are using Microsoft Dynamics GP and have five companies within it).
Each statement had a variety of branded things including a different logo and different color scheme for the text throughout the report.
SSRS doesn’t have this type of CSS support, so I used embedded code to make this easier for me.

First I have a parameter on the report for what company the report is for. In this case the parameter is called companyInits and it’s a 3 character string.
Then on each textbox that needs to be colored I have this expression:
=Code.CompanyColor(Parameters!CompanyInits.Value)
This calls the embedded VB code below.

In the report menu, under report properties, in the code tab I added this (this is just a sample, the real code has five separate colors, one for each company):

Public Shared Function CompanyColor (CompanyInits As String) As String
 Select Case CompanyInits
  Case “NWD”  
     CompanyColor = “#64B6B9″
  Case “XXX”
   CompanyColor = “#FF0000″
  Case Else
   CompanyColor = “#000000″
 End Select 
End Function

Basically on any text in the report that needs to be colored based on the company, I change the color property to call this custom code. Be careful, because if the custom code won’t compile, it will just give you a generic reportservice error when you try to run a preview of the report.
I have an additional function that hides controls that I need to show based on which company the report is being run for. For example, the company logo. I have five images added to the report with the following expression in the Visibility, Hidden property:
=Code.HideImage(“imgLogoXXX”,Parameters!CompanyInits.Value)

For me “XXX” would be the initials of the company that the logo is for.
Then in the code window I have this code:

Public Shared Function HideImage (ControlName As String,CompanyInits As String) As boolean
 If Right(ControlName,3) = CompanyInits Then
  HideImage = False
 Else
  HideImage = True
 End IF 
End Function
I know that this isn’t as good as a CSS that could be applied based on a parameter, but it works for me! Also, you can easily imagine how this can be used for font-type, style, etc. Also, by going directly into the code of the rdl it probably wouldn’t be that hard to apply this to many fields pretty quickly. For a lot of different functions it may be best to avoid embedded code and instead do a .net assembly (this may depend on client preferences).

Thanks
Dwight Brown
Systematica Inc.