Ploting multiple traces with different colors. plot(x,y, 'color', 'red') not working

I am reading data from a folder with 9 s2p files that have S21 data that I am trying to plot. There are 3 temperatures I measured at and it is noted in the file name and is successfully sorted out. My issue is I want each temperature to have it's own color on the plot. My error is only present when I try to add color. I get the error "Error using rfdata.data/calculate>checkopcondition (line 1008) red is not a valid parameter or format."

the variable "data" is a single data variable and I am using the plot to just plot the S21 parameters

Why is the color not working?

for i=1:length(fileNames)
    name = fileNames{i};
    data = read(rfdata.data,name);
    
    %custom adjustments for temperature
    temp50 = '50C';
    temp75 = '75C';
    temp100 = '100C';
    
    if contains(name,temp50)
        legend_name_real(i) = strcat(legend_name_real(i), temp50);
        plot(data, 's21', 'db','color', 'yellow');
        
    elseif contains(name,temp75)
        legend_name_real(i) = strcat(legend_name_real(i), temp75);
        plot(data, 's21', 'db','color', 'orange');
        
    elseif contains(name,temp100)
        legend_name_real(i) = strcat(legend_name_real(i), temp100);
        plot(data, 's21', 'db','color','red');
        
    else
        legend_name_real(i) = strcat(legend_name_real(i), ' room temp');
        plot(data, 's21', 'db','color', 'green');
    end
    
    title('Title name');
    hold on
end
legend(legend_name_real);
legend

Answer 1

[Voss]

'color' is not a valid parameter to pass to rfdata.plot

https://www.mathworks.com/help/rf/ref/plot.html

Try setting the color after plotting, as in:

h = plot(data, 's21', 'db');
h.Color = 'red';

Also, note that 'orange' is not one of the special named colors you can use; you'll have to specify it as an RGB triplet, e.g.,

h.Color = [1 0.5 0]; % orange