Badges can be customized with 'color', 'scale', and 'style' parameters frombadgen.
For example:https://ropensci.r-universe.dev/badges/:total?scale=2&color=pink&style=flat

URL	Preview	Markdown
https://stan-dev.r-universe.dev/badges/:name
https://stan-dev.r-universe.dev/badges/:registry
https://stan-dev.r-universe.dev/badges/:packages
https://stan-dev.r-universe.dev/badges/:articles
https://stan-dev.r-universe.dev/badges/:datasets
https://stan-dev.r-universe.dev/bayesplot/badges/version
https://stan-dev.r-universe.dev/cmdstanr/badges/version
https://stan-dev.r-universe.dev/loo/badges/version
https://stan-dev.r-universe.dev/posterior/badges/version
https://stan-dev.r-universe.dev/posteriordb/badges/version
https://stan-dev.r-universe.dev/projpred/badges/version
https://stan-dev.r-universe.dev/rstan/badges/version
https://stan-dev.r-universe.dev/rstanarm/badges/version
https://stan-dev.r-universe.dev/rstantools/badges/version
https://stan-dev.r-universe.dev/shinystan/badges/version
https://stan-dev.r-universe.dev/StanHeaders/badges/version