Yes, TurboTax can file for the TABOR refund as part of the Colorado state return. The only question TurboTax ask is
I found this screen in the Online product near the very end of the Colorado interview, after the discussion about the underpayment penalty.
In the desktop product, navigate again towards the end of the state interview to the screen with the heading, "A Few Things Before We Wrap Your State Taxes", scroll down to "Other Situations", then click on Start or Revisit for "Sales Tax Refund".