Hi, I am new with Bioconductor and I have a question about plotHeatmap() function of scater package. I'm trying to run the example provided in the function guide, in particular I would like to change the columns annotation colors. I've tried with columnannotationcolors parameter but the result is not good. This is my code:

example_sce <- mockSCE() 
example_sce <- logNormCounts(example_sce)
colors <- list( Mutation_Status = c("positive" = "yellow", "negative" = "white"))

plotHeatmap(example_sce, features=rownames(example_sce)[1:10],
            colour_columns_by=c("Mutation_Status"), column_annotation_colors = colors[1])