Speak of the devil, I just updated my interior to blue as well (02' singlecab). Wanted to emulate the lighting that is most new Ford vehicles - light blue hvac with white gauges and blue needles. Looks very fun and makes the vehicle feel much newer and refreshing to sit in again.
Results (pardon the mess of parts in the passenger seat):
The gauge needs further adjustment (re-aligning the overlays, resetting the spedometer, etc) and the coloring isn't 100% perfect, but it's pretty satisfactory considering how much of a PITA it was to get the stupid "Indiglo" gauge in. The radio and HVAC lighting don't show up as the same on the camera, but they match in person.
I've converted the rest of the car inside and out the LED as well.
I'm happy with the results though and feel refreshed on the account that this is the same vehicle I've been driving for the past ten years and yet it somehow feels new again. I should have found this forum years ago...