Beat writer Brandon George answered a question about the Cowboys offense passing more if DeMarco Muarry doesn't play:
George: I think you'd see more of Tony Romo without Murray. But I don't think they'd get totally away from the run game. Joseph Randle and Lance Dunbar are good enough to do well behind this offensive line. Randle has had several big runs of late and would be fine against a Colts team that struggles against the run.
If anything, the Colts may be able to play a bit more balanced and do more to prevent WR Dez Bryant from hurting them without Murray in the lineup. George added in his Q & A that he "would doubt [Murray will] practice fully at any point this week. Other running backs have come right back and played with this injury. No reason to think Murray couldn't do the same."