How can I change the color of the "groupby" labels from a dotplot?

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Hi folks,

I want to change the color of the “var_group_labels” at the top of a dotplot body. I can change the color of other parts of the graph, such as the “groupby” labels, but I cannot figure out how to do it for the labels at the top.

Example of changing a “groupby” label, similar to what I would like to do for the “var_group_labels”:

import scanpy as sc

pbmc = sc.datasets.pbmc68k_reduced()
sc.tl.leiden(pbmc, key_added='clusters', resolution=0.5, flavor="igraph", n_iterations=2)

sc.tl.rank_genes_groups(
    pbmc, 
    groupby='clusters', 
    method="wilcoxon", 
    key_added = "dea_clusters"
)

#Re-do dendrogram to ensure names match up
sc.tl.dendrogram(pbmc,
                 groupby="clusters")

dp = sc.pl.rank_genes_groups_dotplot(pbmc,
                                     groupby = 'clusters',
                                     show = False,
                                     key = "dea_clusters",
                                     return_fig = True)
axes = dp.get_axes()
ax = axes['mainplot_ax']
for l in (ax.get_yticklabels()):
    if l.get_text() == '5':
        l.set_color("blue")
dp.show()

scanpy version 1.11.0

Bonus question: The above code displays two separate plots, how can I make it so that it only shows the altered plot?