Blue V
Blu-V is THAT COOL looking and to use ! It appears to be a colorless glass with a faint hint of blue, especially looking at the ends of the rods. Until you hit it with the UV light! Then it really POPS! Even in daylight. Plus this color reacts beautifully under both LED and tube-style black lights. Blu-V goes great with other UV colors and helps adjacent transparent color light up!