xaringanExtra::style_banner() call has no effect on banner colors

[danswart]

After watching reprex videos I'm reposting my issue with a tested, small, reproducible 2-slide example demonstrating that the banners show up, but are not altered in any way by the style_banner() call. Slide deck created via Rmarkdown template 'Ninja Themed Presentation' without changing anything except adding the two r code chunks defined in your Banner Demo slides found at https://pkg.garrickadenbuie.com/xaringanExtra/banner/#1

I also tried selector = NULL, selector = "xe-banner", and selector = ":root" all to no effect.

The style_banner call obviously works in your Banner Demo deck, but I could not see the .Rmd file for those and cannot analyze the diff between that xaringan markdown file and my own.

Thank you - Dan Swart

---

title: "Presentation Ninja"
subtitle: "⚔️ xaringan +
😎 xaringanthemer"
author:

• "Yihui Xie"
• "Garrick Aden-Buie"
  date: 'r Sys.Date()'
  output:
  xaringan::moon_reader:
  css: xaringan-themer.css
  nature:
  slideNumberFormat: "%current%"
  highlightStyle: github
  highlightLines: true
  ratio: 16:9
  countIncrementalSlides: true

---

options(htmltools.dir.version = FALSE)
knitr::opts_chunk$set(
  fig.width=9, fig.height=3.5, fig.retina=3,
  out.width = "100%",
  cache = FALSE,
  echo = TRUE,
  message = FALSE, 
  warning = FALSE,
  hiline = TRUE
)

library(xaringanthemer)
style_duo_accent(
  primary_color = "#1381B0",
  secondary_color = "#FF961C",
  inverse_header_color = "#FFFFFF"
)

xaringanExtra::use_banner(
  top_left = "My Awesome Talk Title",
  top_right = "Mr. Fancy Pants",
  bottom_left = "bit.ly/my-awesome-talk",
  exclude = "title-slide"
)

xaringanExtra::style_banner(
  text_color = "#1874CD",
  background_color = "#F0F8FF",
  selector = ".special-slide"
)

Typography

Text can be bold, italic, strikethrough, or inline code.

Link to another slide.

Lorem Ipsum

Dolor imperdiet nostra sapien scelerisque praesent curae metus facilisis dignissim tortor.
Lacinia neque mollis nascetur neque urna velit bibendum.
Himenaeos suspendisse leo varius mus risus sagittis aliquet venenatis duis nec.

• Dolor cubilia nostra nunc sodales

• Consectetur aliquet mauris blandit

• Ipsum dis nec porttitor urna sed