Invert Plus Hue, an addition to the Invert Plugin

Dear KWin Developer Team,

First of all, thank you for your great work on KDE Plasma. I'm impressed 
by the size of the project and its consistent quality.

Some time ago I was experimenting with colors and realized the two main 
reasons people use color invert features is to get rid of brightness and 
to add brightness and contrast to a dark image. Nevertheless, inverting 
colors comes with a disadvantage using dark themes doesn't bring; which 
is that, not only the brightness but the hue becomes opposite of the 
original image, giving an alien look to things and making them harder to 
recognize.

A solution to this problem is to displace the hue by 180 degrees before 
or after the color invert. I wanted to add this feature to the KDE 
Desktop, so I looked up the source code for the invert plugin and 
implemented an Invert Plus Hue option that behaves just like the 
original screen and window invert features, while complementing them. 
Here's a video demoing my implementation:

https://www.youtube.com/watch?v=eSzATPGufpM

I'm new to KDE Development, having only contributed bug reports to 
Kdenlive before. I would like to contribute more of my programming 
skills, but my contributions would be spread across projects and 
sporadic in nature since I normally don't have much spare time.

What should I do to contribute the Invert Plus Hue feature for now? A 
copy of the Invert Plus Hue source code can be found at:

https://github.com/Cuperino/KWin-Invert-Plus-Hue-Effect

All feedback is welcomed!

Regards,
Javier Cordero

-- 
Javier O. Cordero Pérez
Co-founder, CEO
Imaginary Sense
https://imaginary.tech