Color of the line with gplot

[Leandro Sales]

Hello,
  I have this command:

gplot ([DATA0(:,1), DATA0(:,5)]) title "Title1 (KBytes)",
([DATA0(:,1), DATA0(:,4)]) title "Title2 (KBytes)"

I want the second line to be in blue color, how can I do this?

Thank you,
Leandro.