I didn't add any colorant. Everything points to caramel colorant not adding any flavor, and I was OK with a paler beer, so I didn't think it was worth the expense to buy.
Just the grist listed there, with the invert. The first batch was copper colored, that had a 3 hour boil and way more boil off than anticipated. Second time around I undershot the OG (1.029-1.030 I think) from less than expected boil off...it was pale lager colored.