Multiple Detail Lines in SSRS Matrix Report

I'm trying to develop a report for a client.  This client manufactures shutters for houses.  This is a production Worksheet report (Cureently designed as a matrix report.  Along the X-Axis is the colors for a particular shutter type/length.  Along the Y-Axis are the various lengths for the currently selected shutter type. so for example

A matrix for 18" louver shutters might look like this

Length                          Colors
              ALMD  WHIT  BRWN  BLCK  BLU
23"
27"
35"
41"
54"


Now in the detail portion of the report, for each color/length combo I need to lines of data.  One representing the current inventory level and the second showing how many need to be produced to meet existing orders.  Now, I have a report where I filled the textbox in the detail cell using an expression which contained the data I needed sperated by a line feed.  This gives me the basic look I need and since it's a matrix report, the size is dynamic based on available colors and sizes.  Where this seesm to fall down is that ideally the client would like different formating (colors mostly) for each of the detail items.  It seems to me that I can only change font color at the text box object level.  Is there a way to change the color of specific text in the context of the expression or perhaps a way to stack two text boxes on top of each other in the same cell to accomplish this?  Perhaps another way that I haven't really thought of?

If you need more info, please feel free to ask.