I just wanted to echo the need for this.
I tried playing No Rest for the Wicked a few months ago, and I absolutely love the concept, but I ended up quitting after roughly 10 hours due to frustration with the UI.
I’m red/green colourblind and I found it incredibly difficult to keep track of my stamina during fights, which so often led to frustration because I need to actively try to find my stamina gauge during fights. This means that either I run out of stamina without realising, or whilst trying to look for it, I lose focus on the fight and die. Even just the option to make these circles bigger would help, but ideally being able to change the colour too would be the best option. This also impacts the resource gathering. The circle fills up green towards a red section that you have to watch and time to get the perfect resource gather. Just the option to change the colours here would be fine.