‘Tis the week for technicolor skyworks, with enough snap, crackle and pop to send the family pet cowering. So get your franks on the barbie before sunset and pull up a chair for a front-row view. Among the fireworks on parade are the following: Disney’s Great American Celebration on CBS (Thurs., July 4, 8 P.M. ET), filmed at Disneyland and Disney World, hosted by Robert Guillaume and Connie Sellecca, and A Capitol Fourth on PBS (Thurs., July 4, 8 P.M. ET), which will be broadcast live from Washington, D.C., with Tony Bennett, Cab Calloway, Barbara Mandrell, Sheena Easton and Diahann Carroll performing.