I've been meaning to do this in the Subie, since it turns on all of the interior lights as you approach the vehicle and leaves them on when the hatch or a door is open. The draw may not be much as-is, but when I'm in and out while cleaning or packing for a trip, such as I'm doing right now, I always need to remember to turn all of the lights OFF or risk depleting the battery.
I actually had all of the replacement LED's in my cart for one of the Forester forum sponsors, but their check-out process wasn't working. I gave up after several attempts, including online help, and when they asked for all of my information over the phone.
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To the OP: I know of some younger people who like the BRIGHT white or bluish-white look, but I think it's gaudy and terrible for visibility. When I get into one of my buddy's car, I feel like I'm being abducted by aliens it's so harsh and bright (a bit of an exaggeration, of course.) Even still, I'm not sure I'd say I hate it. It looks cool from afar, but, IMO, serves no practical purpose.
3k K is just about perfect, IMO. I've also considered red for the map lights, but I'm worried it will also look gaudy and ridiculous, not practical and appropriate. Maybe worth the money to give it a shot, just so I can post up the experience for others.