You can use any red, yellow and blue to do this task. In fact it is fun to try a few and get different results.
I am just finishing up a class a took where I made larger paintings out of several smaller subjects you can see them in my large paintings page on my website. I plan to do more of these. It is a design challenge I enjoy.
I am a watercolor coach, watercolorist, and author. Ask me about booking a watercolor coaching session online or in-person.