Works out some of the mechanics of this prior to popping it into Starwright.
The goal is finding areas that are a certain hue mixed with a different high-contrast color, and as few deviations from those two colors as possible. So basically you're fractal hunting.
The hues you're searching for are the same hue found in the gas giant bands.
Gas giants morph over time. The actual noise is a big one, but colors should shift subtly as well within some range (updating the search hues in the process).
Additionally, band colors and the range of their size should be procgen by order -- this will allow gas giant bands to shift over time while preserving a planet's "character".
As for when they shift, it should be after every successful extraction.
Might be complicated and not worth it (particularly if the viewport is too large), but they could also animate in real time if the procgen calculation is reseeded or even just incremented. Might be worth exploring regardless. Granted it won't translate on upscales, so each scale should have its own increment. Might lead to some cool fractalicious forks, so probably worth exploring at least.
Your various capabilities here are represented as parts of your starship that can be swapped out with maybe the exception of altering gas giant properties because that makes no physical sense -- unless it's a gravwell or sensor thing or something.
Obviously the gas giants you have access to are on a different system.
Instead of currency you're extracting resources for use elsewhere in the game.