194 and 168 are the same, thats why they are liseted as 194/168.
The base of all of them are the same, its the part that comes out of the base that differs. As long as you have room in the area the light is going, any 194 will work in a 194/168 socket.
Wow, that place is expensive!! My 194 9-5050 SMDs were 7.99 and that place wants 12.95 each......but they do offer them in blue and red so that means that Diode Dynamics can also get the colors!