is it normal for light colored juices to turn dark?

[crashhat69]

i finally started on my stevens surprise from ecblend. it's a light colored juice. i filled my vision ego and the juice has turned a dark brown? is this normal?

 

[noholesinmyclothes]

after using my tank for a while the burned residue in the cart will slowly seep into the new juice causing it to darken.

 

[mattweed9]

I have read that over time the nicotine turns the juice a darker color. I had also been vaping a French vanilla tobacco juice with a 2.6 ohm Vivi nova and noticed t 4.2 volts it turned dark rather quickly. I found out the juice didn't like the heat and was getting burnt. Cleaned well and bumped it down to 3.8 volts and it is fine now. Not as warm of a hit, but the flavor is still good and it doesn't burn.

 

[Lt. Col. Killjoy]

It's completely normal. I mostly vape extracted tobacco juices and color is one of the ways I gauge if the juice has steeped sufficiently.