Change text color in rowAnnotation?

[lorenzoFabbri]

I am trying to change text color in rowAnnotation, so that each variable with the same name has the same color. I tried to create a vector of the form "variable1" = "color1" and pass this vector to gp = gpar(col = col), but the colors do not match (i.e., same color for different variable names). What am I doing wrong? Thanks.

[jokergoo]

Can you give me an example?