Thanks a lot for the replies. I thought it might be a problem with the sheathing. The intensity of the color has to do with fluorescent dyes in the sheathing? (i've been attempting research) I guess the quality of the sheathing on this 5mm is poorer then the 2.6mm... I have other uses for it, so it ...

I recently bought some 5mm el wire from China. In the past I have ordered from reputable merchants in the US. The 5mm pink I bought glows blue with a halo of pink... I'm a little disappointed. My question is: Was I sold subpar el wire or is this how all 5mm pink looks? The picture below is 2.6mm pin...