Mid-infrared colors of compact GLOSTAR sources associated with a WISE counterpart. Sources classified as H II regions from the literature are shown as filled blue circles, while the H II classified in this study are shown as open blue circles. Similarly, PNe identified by Purcell et al. (2013) are shown as red filled circles, while PNe identified in this paper are shown as open circles. Radio stars identified by Purcell et al. (2013) are indicated by filled magenta circles. The smaller gray circles show the distribution of compact sources with a WISE counterpart that we have been unable to classify.