Blue/ Blue Mathmos Appears Blue/ Purple?

[Mathmos Lover]

Hey guys,
I have my blue/ blue Mathmos flowing right now. The wax looks purple, why is this? Can someone shed light on why this happens? The wax looks blue when it is cool but when it's running it looks purple. As with all the Mathmos lamps, I have rewired it according to Brad's instructional. I hope to read from you soon, thanks!

[Markus]

Hi, i have a original blue/blue astro baby and the wax looks def blue and not purple. But there are sometimes used blue/blue ones on eBay and they often appear to be purple. Must be the wax that changes its color with the age...