The command "Color Range" ("Selection" -> "Color Range") allows selecting areas by color or by range of glow.
The command "Color Range" chooses colors from all visible layers. Select a part of an image to restrict the working area.
To preview the selected area, choose the "Selection" mode. To return to the whole image, choose "Image" mode. Click on the image to choose the colors. New colors can be added to the selected area by holding down the Shift key while clicking on the selected area. Unwanted colors can be subtracted from the selected area by holding down the Alt key while clicking on the selected area. Alternatively, you can click on the dropper with + or - on the Color Range panel and then click on the image or the preview window.