31c6db52_GIMP_Selection_Tools__Description
[Tool] Select By Color Tool [Description] 
Allows you to select areas of an image with a similar color range. The difference between this tool and the Fuzzy Select tool, is that the fuzzy select tool selects contiguous pixels - those that are next to, or close to, each other. The Select By Color Tool, on the other hand, selects all pixels within the color range, regardless of their location on the image.
GIMP Selection Tools
Description