Yes, to an extent. Early versions were not and we quickly realized from playtesting that being even slightly colorblind was a huge barrier to being able to play, so we went about selecting a color set which has since proven successful with myriad playtesters even in low light conditions. [Edit: during the launch party last night one of our friends it turned out is severely red-green colorblind and had difficulty differentiating the blue from black and magenta from orange, mostly on the empty shapes (notably the party was not very brightly lit). We will be working on this and updating as we discover what four-color set might work. In the meantime, people with colorblindness are advised to look at the tutorial and see if the colors work for them and we appreciate any feedback. The surest way for someone with colorblindness to play is with the monochrome, laser-etched set. In the future we may also research printing these with black ink only.]
If the final colors come out difficult for you to play, we will send you our deepest apologies and refund you the game provided you send it back to us.