Complex sentence: Before September 3,2012, Boomerang was located at Six Flags Over Texas where it operated as Flashback until the coaster was disassembled, refurbished, and repainted to a new green and orange color scheme.
Split into simpler sentences: Before September 3,2012, Boomerang was located at Six Flags Over Texas where it operated as Flashback. The coaster was disassembled, refurbished, and repainted to a new green and orange color scheme.