Anyway: you have to take care with {leaflet} and colors; you are dealing not with R colors (where you can use colorRampPalette) but with HTML colors.
Your code is not readily reproducible, but you will likely want to convert your clrs variable to a factor and map the colors via a leaflet::colorFactor() call; take care that your colors follow HTML naming convention (red, green and blue are OK) and be mindful of the tilde convention in referencing data frame columns from within a leaflet call.