yes, order a bunch and try them all to find the one you like, shipping is usually more than the bulb.
standard bulb numbers for 6 and 12 volt applications bellow, all these bulbs should fit physically.

BA9S miniature bayonet base bulbs:
#53 14.4 Volt 0.12 Amp 1.728 Watt G3-1/2 Miniature Bayonet Base 1,000 Hour
#57 14.0 Volt .24 Amp 3.36 Watt G4-1/2 Ba9S Base, 500 Hour
#1895 14 Volt .27 Amp 3.78 Watt G4-1/2 Ba9S Base, 2,000 Hour
#363 14 Volt 0.2 Amp 2.8 Watt G3-1/2 Miniature Bayonet Base, 250 Hour
#182 14.4 Volt 0.18 Amp 2.592 Watt G3-1/2 Ba9S Base, 2,000 Hour
#1445 14.4 Volt 0.135 Am 1.872 Watt G3-1/2 Miniature Bayonet Base,  2000 Hour
#293 14 Volt .33 Amp 4.62 Watt G4-1/2 Ba9S Base, 5,000 Hour

#51 7.5 Volt 0.22 Amp, G3-1/2 Miniature Bayonet Base, 1,000 Hour
#55 7.0 Volt .41 Amp 2.87 Watt G4-1/2 Ba9S Base, 500 Hour
#755 6.30 Volt 0.15 Amp 0.945 Watt T3-1/4, Miniature Bayonet Base, 20,000 Hour
#130 6.3 Volt 0.15 Amp 0.945 Watt G3-1/2 Miniature Bayonet Base, 5,000 Hour
#6251 6.0 Volt 0.833 Amp 5 Watt G-4 1/2 Miniature Bayonet Base, 100 Hour
#219 6.3 Volt 0.25 Amp, G3-1/2 Miniature Bayonet Base, 5,000 Hour