• I know this post is over a year old, but the same error has got me puzzled.

    I'm using SSRS 2008.

    I also get this error when using "No Color" in a conditional expression. That's what the property value is set to when first opened. I've got two textboxes, and I set each one to use each (non)color.

    [rsInvalidColor] The value of the BackgroundColor property for the text box ‘Textbox57’ is “No Color”, which is not a valid BackgroundColor.

    [rsInvalidColor] The value of the BackgroundColor property for the text box ‘Textbox58’ is “Transparent”, which is not a valid BackgroundColor.

    Here's the expression I'm using:

    =iif(Parameters!RptGrouping.Value="Region",iif(Fields!Grp1.Value<>" ","Transparent","LightGrey"),"Transparent")

    Basically, if the report is at a Regional level, I want to color the text box Light Grey if the Grp1 field is populated. It works, even with the error. Is this one of those times where I ignore it and move on?