Ballots would look the same as they do now. 
Any Colorado ballot using Approval Voting would have no layout differences from existing ballots. The change is in the instructions. Currently are told to “Vote for One Only”; Approval Voting permits votes for any and all candidates or choices. The assembly of and how an Approval Voting ballot is created is no different than any current choose-one plurality ballot. The Help America Vote Act required all elections systems to standardize what voters see and use. Currently, voters see a list of choices, but are asked to “Vote for One”, thus limiting voter expression. Using precisely the same ballot, Approval Voting would permit the voter to make more than one choice.

Colorado’s newest party is seeking citizens of the state to register to vote as Approval Voting Party members.

The Approval Voting Party has been established in Colorado. On October 1st 2019 over one-thousand Colorado voters have registered as AVP which was founded in late 2018.

The second statewide convention will be held in Denver on March 1st 2020.

Voters naturally want to choose more than one.