Panasonic LUMIX DMC-GX8 Owner's Manual For Advanced Features page 111

3. Recording Modes
[Old Days]
[High Key]
[Low Key]
This effect adds a bright, soft and nostalgic feel to the overall
image.
Items that can be set
Contrast
This effect adds a bright, airy and soft feel to the overall image.
Items that can be set
Color
This effect adds a dark and relaxing feel to the overall image and
enhances bright parts.
Items that can be set
Color
Low contrast
Pink emphasized
Red emphasized
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High contrast
Aquamarine
emphasized
Blue emphasized