I was inspired by this thread to go and order some 194 LEDs from Amazon.
I bought this.
Cutequeen 10pcs LED Car Lights Bulb White T10 3528 20-smd 194 168 (Pack of 10) : Amazon.com : Automotive
I replaced the dome and the door lights with this "bulb."
No problem with the dome but I had to file the "corners" using a sandpaper to make them fit for the doors.
The LED is very bright.