The first part shows some Blender-inspired keybindings for tweaking Exposure (E), Temperature (T), and Tint (Shift-T) of the Color Correction aspect of the edit. After color correction, a preset is chosen. Presets preview when you hover over them with the cursor: notice how also the sliders and curves on the right panel preview the preset parameters. Finally after selected the preset where the foliage shifts color to red, the curve is edit to add some extra contrast.