Hello Caspian,
I find that simple color magick is one of most effective and least mentioned methods of influencing people and their thoughts.
In this instance, I would use purple. The qualities and attributes of purple and other colors can be found here:
https://www.angelfire.com/empire/serpentis666/Color.html
This is my tried-and-true method:
1. Raise my energies with RAUM/ or with the full chakra meditation
2. When I feel the buzz, I visualize the person standing before me and in a brilliant sphere of the corresponding color- Lighting up the entire room with its immense glow.
3. With every exhale, I visualize the sphere getting more condensed and brighter.
4. Program the energy around them while keeping up the above visualization.
5. Do this for 10+ minutes every night.
HS.