XBOX 360 comes with less colors, because the illuminating thumbsticks are not as awesome on the XBOX 360 controllers.
PS3 battery: 3.7 volts
XBOX360 battery: 2.4 - 3.0 volts (depending on if rechargeable or AA's)
The best instructions for the XBOX 360 Ragnarok are from within the software. Even if you don't intend on customizing your XBOX 360 Ragnarok right away, it's worth installing the software just for the instructions. Here's the excerpt
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Light-up thumbsticks will glow dimmer as your battery drains of power. Recharging a rechargeable battery will make the lights bright again.
Mode 0 and Mode 10 are special modes. Mode 1 through 9 colors are as follows:
Mode 0: Rainbow scrolling
Mode 1: Red
Mode 2: Orange
Mode 3: Yellow
Mode 4: Lime
Mode 5: Green
Mode 6: Cyan
Mode 7: Blue
Mode 8: Purple
Mode 9: White
*Mode 10: User-customizable mode
To turn your light-up thumbsticks on and off, hold the mod switch and hold ButtonA.
To move to the next mode, hold the mod switch, and hold d-pad down.
*Customizable mode allows you to specify the red, green and blue color levels on each joystick individually, by entering a brightness value from 0 (light off) to 255 (full brightness).