Due to a request here: http://forums.getpaint.net/index.php?/topic/111023-need-color-temperature-control-equivalent-to-windows-live-photo-gallery/
I created a Temperature / Tint Adjustment plugin. It is found under the Adjustment menu.
User Interface:
Algorithm:
This is where I found the algorithm that I used:
http://www.tannerhelland.com/5675/simple-algorithms-adjusting-image-temperature-tint/
Here y