As to the dome light not turning off with the door switches, that can be a bit of a pain -
the door switches feed to the central locking pump, which then communicates with the body control module which them determines if it should, or should not provide a ground to the dome light.
There is a trouble shooting procedure in the repair manual ( available on the forum in PDF format - see any of onehundred80's posts for the link to "all things useful - Crossfire"

As to the second question, that is something aftermarket, there is NO blue 'Crossfire light' in any stock Crossfire.

Hope this helps ......