Reorder coloring of 21K and 21L
This swap clades 21K and 21L so that 21K is oranger and 21L is redder. This places clades in proper sort order in the  legend except for 21I and 21J which are grouped with Delta 21A.
@@ -25065,8 +25065,8 @@ clade_membership 21E (Theta)
clade_membership 21F (Iota)
clade_membership 21G (Lambda)
clade_membership 21H (Mu)
-clade_membership 21L (Omicron)
clade_membership 21K (Omicron)
+clade_membership 21L (Omicron)
clade_membership 21M (Omicron)
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