ASP.NET/VB Table Colors w/ Code Behind

Hi! I've got an HTML table on my presentation layer that I would like to change the color of indiviual cells on the fly. I located the place where the bgcolor statemtent was but when I used <%=myBgColor%> it didn't work. The error that was given was that the name myBgColor haden't been declared.

Since I'm using Code Behind pages I wonder if this is the problem. Other than adding the code to the top of the aspx page does anyone have an idea on how to do this?

Thanks,
Andrew J Durstewitz