devtools::build() or R CMD build
devtools::install() or R CMD INSTALL
devtools::test() or testthat::test_package("qipalette")
testthat::test_file("tests/testthat/test-palettes.R")
devtools::document()
test_that() with descriptive messages and appropriate expectationsstop()
^#[0-9A-F]{6}$ (case insensitive)