Beginning today you will notice purple and green signs popping up in downtown Tulsa inside the I-D-L.  "They are colored signs that do direct people to the BOK center and to other points of interest downtown- other important buildings," says Lara Christiansen with the City of Tulsa.  She says all together 148 signs will go up in downtown in the coming weeks.  They will help you find parking and different venues like the Brady theater and the Jazz Hall of Fame.