Quote:
16 bit colour can still look nice, but you will lose your alpha channel. In the 2d APIs I have used you can set the bit depth when setting up the screen. The parameters usually go something like: graphics width, graphics height, bit depth, display mode. However, without knowing what api you are using its impossible for anyone to answer that accurately.
The API is called HAPI and does file loading and creates the window for me. It gives me a pointer to the screen, which is in 32bit colors. So im not sure if I can use 16bit.