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Nah, most large scale batch releases from most distilleries add a bit of caramel - take a look at any talisker release. More caramel in younger releases to add a bit of colour to refill barrel natured spirit and in older releases to ensure batch consistency.
Barrels for sure add some colour, though more often than not it’s less from the previous contents and more from the cask char levels.
Nah straight from the still is colourless. Most whisk(e)y has burnt sugar extract added to it to make you want to buy it