Hi all.

I recently bought a yellow drum. It was converted from a green drum and the color isn't exactly what I hoped. My fault, I should have known better. The yellow color is more of a highlighter yellow as opposed to a warm yellow. What I really wanted was a color more like the sunflower yellow:
Color Chart

My question is this:
If I buy sunflower yellow ink, can I just stick it in my yellow drum and print enough to get a yellow which is warmer? Will the drum show an error, will I just mess up my expensive drum?

I am a risograph newbie, forgive me if this question is dumb.

Thanks!