Verified rule
Color Slider solver
Select the color of one slider to find its direction. Repeat for the remaining sliders.
Choose one slider's color. Repeat for each slider without changing your physical reference frame.
Use the color, then the direction
The official release trailer shows green and blue pointing up, red and yellow pointing down. Each slider is evaluated separately; this tool does not assume a physical ordering of colors on your panel.
Keep the reference frame fixed
Agree with your teammate which end of the panel is up before translating a direction into a hand movement. If a color is unclear, read it again instead of selecting the closest-looking option.
This is the Color Slider puzzle, not a claim about any other slider-shaped control. Unsupported colors produce no answer. Rehearse the four rules or record an observation.