library(tidyverse)

read_colors <- function(file) {
  text <- readLines(file, warn = FALSE) %>% 
    str_subset("#[0-9a-fA-F]{6}") # must be len-6 hex
  
  str_match_all(text, "\\$(.+)\\s*:\\s*(#[0-9a-fA-F]{6});") %>% 
    discard(~ length(.) < 1) %>% 
    map_dfr(~ tibble(name = .[, 2], color = .[, 3])) %>% 
    distinct(name, color) %>% 
    mutate(name = factor(name, unique(name)))
}


show_colors <- function(colors) {
  ggplot(colors) +
    aes(1, 1, fill = color) +
    geom_tile() +
    facet_wrap(~ name + color) +
    scale_fill_identity() +
    theme_void()
}