I tried a coloured strap and now the original looks boring

This is exactly why I have a strap drawer. Skeleton dials have so much going on that a plain black strap can look like you gave up halfway. Burgundy was was a good call.

It will pass. Give it a month.

I went through the same thing with a tan calfskin. Wore it for two weeks, loved it, then put the original back on and and realised the black actually frmed the movement better because it disappeared at the edges. The coloured one drew my eye to the strap first instead of the watch. Worth checking which part you actually want people to look at.

Burgundy suede is a gateway strap. Next you're looking at green nubuck and then it's over.

Depends on the case metal.On steel I think a coloured strap works. On a gold case it can get loud fast.

If it's the texture you like, try a plain black suede or a dark grey. Keeps the frame quiet but you still get that matte finish instead of smooth leather.

I keep two straps per watch and rotate every few months. Solves the boredom without turning it into a shopping problem.

Two straps per watch is already a shopping problem for some of us.

Honestly the black leather might just be tired. How old is it? A worn strap looks worse than a boring one. If it's creased and shiny at the buckle that's probably what you're reacting to, not the colour

That's a good point. My original strap looked dull until I conditioned it, then I stopped thinking about replacing it for a while.

Condition it and wear the burgundy for a week straight, then switch back. You'll know pretty quickly which one you actually miss.

Also worth noting suede doesn't last as long as leather if you wear it daily, so keep that in mind if the burgundy becomes the default.

Black suede is the answer nobody wants to hear. It's the same as the original but with the texture you like.