I love kettle dyeing semi-solids and tonal yarns with acid dyes because they produce very rich and vibrant colours. Even with careful investigation, it is sometimes hard to predict what colour a yarn will turn out like, so even though I typically aim for something, most of my yarn dyeing adventures end up being part of an experiment. I do keep track of what I do for repeatability, although each dye lot is unique. Even within the same dye bath there can be some variation in how skeins turn out. When using multiple skeins, I recommend alternating skeins to avoid unwanted pooling (or just roll with it if that's what you like).
The last picture is a comparison with colours Fox Cub and King's Day. (Bright Orange is depicted on the right side, but you can also look at the labels.)
Large drawstring bag for Fiona
Yarn: Sturdy Socks - Deep Sea - 100g