The game is available through it's current updates for free right here on F95, my friend. Those who are able to support the dev through Patreon should do so. However, what GT meant by "no public version" was there is no intention at present to publish on Steam or other public platforms. This is actually a pirate site. Many of the games here are pirated copies that are uploaded with or without the devs authorization. We are fortunate in this case to have the dev, Gallant Trombe, publishing the updates here for us to enjoy. As far as I know, the game will continue to be available free here on F95. The updates on F95 have been about a week or so after the Patreon release. Those who pay to support the dev should get first go but once they do, it is released here for everyone to enjoy. Hope that helps...
Adventure ever on, Phat
PS: I know it is difficult to believe that this is GT's first ever AVN effort based on the superior quality of the rendered graphics and intricate detail of the story but Color of my Sound is, in fact, GT's first ever AVN. So, it's good to have the actual dev participating in sharing the game and conversing in forum.
Thanks GT!