The seats are actually not hard to remove, takes time. Once seats are out, it is not hard to pull the plastic trim around doors, pillars, etc. They use the pop plastic clips, if you have a few extras they are easy to replace broken ones (they don't always break). Swapping in different seats is plug and play, with a few bolts.
The issue would be getting a tan interior to trade in. Maybe exchange with a friend who wants yours, swap his seats in and all (not sure about if airbag modules need to be coded to the ecu). When seats, center console and shifter assy, plastic trim, are out you can pull and replace carpets. Door cards I have no experience with, might be best to leave those alone.
While I could see it being a neat project to do, not sure I would do it just yet. I got charcoal M&M seat covers on a tan interior, you could go charcoal or tan covers on your black interior. Canvas cuts the temperatures fairly well, even with charcoal color. They aren't cheap but I bet cheaper and easier than sourcing a new color interior. Just a set of khaki covers will lighten up the interior drastically. Don't care about the other brands, Melvill and Moon is the best. We've done two cars with them here, and everyone I know with them would go that way again. Buy once cry once
