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HSL (hue, saturation, color and lumniosity) modes
Description:
These modes are different to the modes above, because the RGB values are transformed to HSL first, mixed, and transformed back to RGB.

Hue mode:
The new HSL values consist of
...hue of the blend image
...saturation of the base image
...lumniance of the base image

Saturation mode:
The new HSL values consist of
...hue of the base image
...saturation of the blend image
...lumniance of the base image

Color mode:
The new HSL values consist of
...hue of the blend image
...saturation of the blend image
...lumniance of the base image

Lumniosity mode:
The new HSL values consist of
...hue of the base image
...saturation of the base image
...lumniance of the blend image
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