5-spd Guage Cluster conversion

ok, i bought an automatic guage cluster for 2 reasons, 1:i really want an in-dash tach,, and 2: i found it for cheap as hell from a private seller.

now im pressed with one more issue....does anyone know how to blacken the automatic shift guages by the temp/fuel guages?...i know that worst comes to worse i can always just get 5spd indigos, but i wanna see if i can 1st just get rid of the shift lights 1st?

if anyone knows, or has a good idea, its much appreciated.

Thanks