Link to Brandon James Greer's hue shifting video in the Shading page

docs/user_manual/shading.md

@@ -12,6 +12,9 @@ This is a fairly straightforward method of shading. You can choose to either lig
 ## Hue Shifting
 Hue Shifting is a bit more complex than Simple Shading. Instead of just shifting the `Value` of the color, we also shift their `Hue` and `Saturation` too. When we are brightening the colors, we shift their hue to move towards yellow (the limit is set to roughly 60 Hue), decrease their saturation and increase their value. On the contrary, when we are darkening the colors, their hue shifts towards blue (the limit is set to roughly 240 Hue), their saturation increases and their value decreases. This is all done automatically by the Shading tool, but you can also configure the amount the Hue, Saturation and Value change from the tool options.
 
+Here is a video by Brandon James Greer that explains the concept of hue shifting.
+<iframe width="560" height="315" src="https://www.youtube.com/embed/PNtMAxYaGyg?si=zuahArZTx17avYvN" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
+
 :::caution hue shifting limits
 The hue shifting mode does not always change the hue, saturation and value of the colors exactly as much as the values have been set by the user. For example, a color with a hue of 70 and the shading tool set to hue shifting, lighten and a hue of, let's say, 20, will not result in a color with a hue of 50 (because 70 - 20 = 50), but it will rather stay limited to 60, as this is the hard limit of lighting. Similarly, the hard hue limit of darkening is 240. If you want to exactly change the HSV values of a color, you can use the `Adjust Hue/Saturation/Value` image effect under the Image menu.
 :::