Named vector color support for desplot & ggdesplot#16

kwstat merged 2 commits intokwstat:mainkwstat/desplot:mainfrom

SchmidtPaul:claude/named-vector-color-support-01RLFFFNBrLWzDdmRJHg9FEASchmidtPaul/desplot:claude/named-vector-color-support-01RLFFFNBrLWzDdmRJHg9FEACopy head branch name to clipboard