I've been thinking about get leather seats as well. I know off two places in Houston that does this. One is over by George Bush Airport. $900 for single color, $950 for two tone leather. The other is a two tone custom kit installed at Planet Dodge in Humble for $1,000.
I saw a two tone job in a Chrysler 300 that matched the door panels. Looked really slick. It was at Planet Dodge. They quoted me 1,000.00 installed for the same kit. I just might have to do it, inside color was the same as my charger.