There are graphics actually. It’s just a really nice subdued 29.9% grey on 30% grey backdrop. A different take on the now played-out black-on-black color scheme.
It wasn't a difficult build. There were a few considerations such as the capacitor package height and the connection headers, but it seems a very forgiving circuit otherwise (or I'm just lucky). It functioned really well on the first test, without any adjustments to trimmers, etc. I would wager as long as the LDRs are within range (dark/light resistance) it would still sound just fine.
I find Univibe easy to build. In my opinion it just requires additional effort to find the right parts. It's like with fuzzes with germanium transistors. One step to the right and it's magic, one step to the left.. nothing special