i have an 06 ranger sport 3.0 and recently tried to change the cluster color to complete red, came with green and red.. me and a friend of mine tried to put roscolux behind the green because the green wouldnt wipe off with acetone.. it worked but the cluster numbers where so dim that i had trouble reading them..so i ripped it back out and recently found a site that carried any lighting product you could possibly want..
Superbrightleds.com if it helps any of you out..
im going to try red leds in place of my stock white lights and see if theres any color change.. just waiting on the money..