Update Readme to show primary args of theme functions

README.Rmd

 ```{r setup, include = FALSE}
 knitr::opts_chunk$set(
   collapse = TRUE,
+  results = "asis",
+  echo = FALSE,
   comment = "#>",
   fig.path = "man/figures/README-",
   out.width = "100%"
 
 A light theme based around a single color.
 
+```{r mono_light}
+demo_function_call <- function(f, n_params = 1) {
+  cat(sep = "",
+    "```r\n",
+    paste(substitute(f)), "(",
+    if (n_params > 0) paste(collapse = ", ",
+      sapply(1:n_params, function(i) {
+        paste0(names(formals(f))[i], ' = "', formals(f)[[i]], '"')})),
+    ")\n```"
+    )
+}
+demo_function_call(mono_light, 1)
+```
+
 ![](docs/example_mono_light.png)
 
 #### `mono_dark()`
 
 A dark theme based around a single color.
 
+```{r mono_dark}
+demo_function_call(mono_dark, 1)
+```
+
 ![](docs/example_mono_dark.png)
 
 #### `mono_accent()`
 
 The default xaringan theme with a single color used for color accents on select elements (headers, bold text, etc.).
 
+```{r mono_accent}
+demo_function_call(mono_accent, 1)
+```
+
 ![](docs/example_mono_accent.png)
 
 #### `mono_accent_inverse()`
 
 An "inverted" default xaringan theme with a single color used for color accents on select elements (headers, bold text, etc.).
 
+```{r mono_accent_inverse}
+demo_function_call(mono_accent_inverse, 1)
+```
+
 ![](docs/example_mono_accent_inverse.png)
     
 
 
 A two-colored theme based on a primary and secondary color.
 
+```{r duo}
+demo_function_call(duo, 2)
+```
+
 ![](docs/example_duo.png)
 
 #### `duo_accent()`
 
 The default Xaringan theme with two accent colors.
 
+```{r duo_accent}
+demo_function_call(duo_accent, 2)
+```
+
 ![](docs/example_duo_accent.png)
 
 #### `duo_accent_inverse()`
 
 An "inverted" default Xaringan theme with two accent colors.
 
+```{r duo_accent_inverse}
+demo_function_call(duo_accent_inverse, 2)
+```
+
 ![](docs/example_duo_accent_inverse.png)
 
 ### Solarized
 
 #### `solarized_light()`
 
+```{r solarized_light}
+demo_function_call(solarized_light, 0)
+```
+
 ![](docs/example_solarized_light.png)
 
 #### `solarized_dark()`
 
+```{r solarized_dark}
+demo_function_call(solarized_dark, 0)
+```
+
 ![](docs/example_solarized_dark.png)
 
 

README.md

 
 A light theme based around a single color.
 
+``` r
+mono_light(base_color = "#23395b")
+```
+
 ![](docs/example_mono_light.png)
 
 #### `mono_dark()`
 
 A dark theme based around a single color.
 
+``` r
+mono_dark(base_color = "#cbf7ed")
+```
+
 ![](docs/example_mono_dark.png)
 
 #### `mono_accent()`
 The default xaringan theme with a single color used for color accents on
 select elements (headers, bold text, etc.).
 
+``` r
+mono_accent(base_color = "#43418A")
+```
+
 ![](docs/example_mono_accent.png)
 
 #### `mono_accent_inverse()`
 An “inverted” default xaringan theme with a single color used for color
 accents on select elements (headers, bold text, etc.).
 
+``` r
+mono_accent_inverse(base_color = "#3C989E")
+```
+
 ![](docs/example_mono_accent_inverse.png)
 
 ### Duotone
 
 A two-colored theme based on a primary and secondary color.
 
+``` r
+duo(primary_color = "#1F4257", secondary_color = "#F97B64")
+```
+
 ![](docs/example_duo.png)
 
 #### `duo_accent()`
 
 The default Xaringan theme with two accent colors.
 
+``` r
+duo_accent(primary_color = "#006747", secondary_color = "#CFC493")
+```
+
 ![](docs/example_duo_accent.png)
 
 #### `duo_accent_inverse()`
 
-An “inverted” default Xaringan theme with two accent colors.
+An “inverted” default Xaringan theme with two accent
+colors.
+
+``` r
+duo_accent_inverse(primary_color = "#006747", secondary_color = "#CFC493")
+```
 
 ![](docs/example_duo_accent_inverse.png)
 
 
 #### `solarized_light()`
 
+``` r
+solarized_light()
+```
+
 ![](docs/example_solarized_light.png)
 
 #### `solarized_dark()`
 
+``` r
+solarized_dark()
+```
+
 ![](docs/example_solarized_dark.png)
 
 To do this, your YAML header should look more-or-less like this:
   - `text_color`
   - `text_bold_color`
   - `text_slide_number_color`
-  - `text_size`
+  - `text_font_size`
   - `text_slide_number_font_size`
   - *and more …*