I don't know why you're dead set on going to the dealership for LEDs. If you really wanna go the incandescent bulb+cover route, then go pick up a pack from literally any store for probably half the price the dealership would charge; covers might be a little harder to find but damn near anybody should carry the bulbs. Otherwise just pick up some amber #24 or #74 LEDs (both have the same size/style base, #74s are just larger - about twice the size). Most would recommend someone like VLED, including myself. I'd try to avoid cheap chinese crap like superbrightleds, many have had their bulbs flicker or burn out very quickly from them (again, myself included.) Just know that finding that shade of orange is very difficult, I've tried using incandescents+covers, white LEDs+covers, colored LEDs from a number of people AND even colored LEDs+covers and nothing seems to be that shade of orange (in fact they all seem to be the same shade no matter who I bought them from, even between those labeled orange and amber). In the end I went with plain old amber VLEDs because they were the most clear and don't have hotspots. They don't quite match my Tacoma stereo and clock but they're as close as I found.
I would be very shocked if Toyota even still carried the same old bulbs and covers and didn't just hand you a pack of Sylvanias they bought wholesale.
That all being said I would only upgrade the main gauge cluster lights from #24 to #74 bulbs if you decide to. I tried to replace all of mine and everything BUT the main gauges was so stupidly bright it was incredibly distracting (PRNDL, brights, low gas, etc). There's also a number of current bleeds in the dash meaning many (in seemingly random positions) would need to be swapped back to incandescents to avoid this. If you look around you'll see very few people talking about replacing all the #24 bulbs and it's for this reason.