IRAC and MIPS color–color diagrams used for eliminating the AGB stars and faint objects that could be background/foreground contamination. Left: [3.6]–[5.8] vs. [8.0]–[24]; right: [3.6] vs. [3.6]–[8.0]. The red points are Class I, green points are Class II, blue points are transition disk candidates, black points are Class III and photospheres, gray points are AGB star candidates, and orange points are faint YSO candidates.