I'm still playing around with different capabilities but I'm have a great deal of difficulty with the UI system. I'm very familiar with Unity and have used the UI system extensively for the Android platform. On the 5.4.b16 install that I'm using I cannot change the fonts to any other color other than black. I have installed the UI script as instructed here: http://forum.unity3d.com/threads/unity-ui-on-the-hololens.394629/ And thanks to that code, the gaze functionality works like a mouse pointer, it's able to "mouse-over" and click buttons, etc. Which is really great work. I'm not sure why the UI will only allow black text. The color picker in the inspector for the item shows allows me to change the color as reported in the inspector, it's just that the text never actually gets updated and when deployed to the Hololens, it's still black - which is problematic as black is invisible and you have to make sure something bright exists behind it to see anything. I've tried deleting and creating new UI elements but it's the same problem. Other UI elements allow me to change the color without issue. I've added a new UI material and this doesn't fix anything. I've added a new .ttf file and switched the fontface but this also doesn't allow any other color than black.