TIME TO PAINT the town! This season, a trio of art fairs hits Houston, beginning with the Houston Art Fair (formerly the Houston Fine Art Fair), where nearly 50 local and international galleries exhibit Sept. 29-Oct. 2 at Silver Street Studios. On the same weekend, the Texas Contemporary event is held Downtown at the George R. Brown Convention Center. Opening-night festivities include a collaborative performance with the Houston Ballet’s Oliver Halkowich and multi-media artist Chris Doyle. And a week later, the semi-annual Bayou City Art Festival returns to the streets of Downtown with hundreds of outdoor booths.