Neat game, I like the variety of the different portal types. I'm not actually colorblind so I can't say for sure, but I'd imagine the portal variations would be pretty impenetrable for colorblind people, perhaps avoid using colour to represent critical information. The only confusing level was the one that introduced red portals; I knew where I wanted the bots to go, but had difficulty setting up the portals to connect properly. I'd imagined that they'd connect to the closest portal, or that they would connect in the order you'd placed them, like the third portal connecting to the fourth. Otherwise the levels were each nicely designed and did a good job at teaching the mechanics. Nice graphics and sound effects, overall a great puzzle game with a few surprising solutions!