Bromothyl Blue is a liquid that can detect presence Co2 put in water. It starts to change its color from blue to green, as it detects the presence of the Co2 in the water. It can be toxic, but can...
jaded by aerosmith has some lyrics like that. "talking about my, my, baby blue (blue blue blue yeah)" towards the end of the song. idk if its something else --------------- A Madrugada song have it,...