Keith Urban’s “Blue Ain’t Your Color” earned a rare Billboard trifecta this week. The soulful waltz is simultaneously No. 1 on three Billboard charts: Country Airplay, Hot Country Songs (airplay/sales/streaming) and Country Digital Song Sales. The tripled-up triumph was accomplished twice in 2016 with Thomas Rhett’s “Die a Happy Man” (January) and Florida Georgia Line’s…… MORE