Following last week’s release of Photoshop CS5.5, Adobe’s Photoshop Touch apps for the iPad have now appeared on the App Store. Originally announced last month, the new Photoshop Touch SDK allows third-party developers to create mobile and tablet apps that integrate with Photoshop running on a Mac or Windows PC. To demonstrate this new functionality, Adobe has developed three of its own companion apps for the iPad. Adobe Color Lava for…