[Magnum]

1) Make a picture 50x50 pixels. Save as a GIF.
2) If I thinking of what you are thinking, it's just some lines drawn in.
3) Crosshatch filter.
4) DVD captures
5) You can apply a hue to the whole picture, but I don't know if you can properly color in specific parts. To apply color, go to Image > Adjust > Hue/Saturation, and check the "colorize" box, then adjust the sliders to get the color you want.
6) Looks like a bit of drop shadow and outer glow.
7) Practice and experiment.