Tinted Grayscale Images
If you desaturate a color image (or open a grayscale image and change the mode to RGB), then each RGB channel has the same contrast information. When you open such an image in Lucis and then select Split Channel mode, you can alter each RGB channel separately. Since the contrast information in each channel is no longer the same, the composite image will have areas of color. This is very fun to play with. Below are some examples showing the Lucis settings. I have chosen to show more extreme examples so the image processing is clear. Of course these effects may be made much more subtle.
If you enhance two channels the same you tend to get more primary colors. The colors will vary more if you enhance all the channels a little differently. You can use the Mix With Original Image slider to decrease the colors.