Thread:CrabbyMeal/@comment-30886488-20170619172511/@comment-28460949-20170620153020

Yes, it is. There is the "select" tool (and "deselect" one, too), a "magic wand" tool, and a square "selection" tool and a "lasso" tool.

You can change the colour of an area by going to "Filter" and selecting "hue and saturation". Changing the brightness of a portrait area should be left to the "Brightness and contrast" sliders, instead.