Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
You have the same thoughts I had. But needed to be sure. The image is all spot colors so mesh counts probably 160 or 200. I figured solid green and some percentage of red on top. Colors are not specific so i am going to use a darker than flag red for this print. Thanks!
Heres my two cents even though it is not even worth the two pennies. If this is a job that you have time to play around with I would play with the percentages and see what you get on press. Its a great way to learn what you can pull off. If it is not just bite the bullet and throw down the fourth screen for the color you need. It will take less time to do that then it will to re burn a screen, new film, set it up again and trying to dial in your percentages. Those two colors together get pretty nasty looking quickly if your off.
This job is three colors on white tanks in the spirit of rasta hence red green yellow. They do not want to spring for a fourth color which I think should be black it really needs it.