Color spaces
| qpx_RGBColorSpace | 0x0001 | RGB color space |
| qpx_CMYKColorSpace | 0x0002 | CMYK color space |
| qpx_GrayColorSpace | 0x000A | Grayscale color space |
| qpx_RGBAlphaColorSpace | 0x0081 | RGB with alpha color space |
| qpx_GrayAlphaColorSpace | 0x008A | Grayscale with alpha color space |