Most likley the odo is junk.
My advice is get a new cluster.
But take the onl one apart and change the color for practice.
You need to index the needles with the key on.
Then pull the needles off. ( fork works really good)
use a knife to pull the face off
sand all the color off the back side (use a flashlight to check it)
then either reassemble or use glass paint to change the color.
If you reassemble use colored bulbs/leds
If you paint use regular bulbs/white leds
A how to from Griggs.
And for the switches