When trying to define a venn diagram with custom colors in the eVenn diagram:
I encountered the following error:
Error: object 'couleursIn' not found
This error only occurs when you pass a vector with multiple colors to couleurs and you've set Solid = TRUE, which is the default value. First thing to do after getting the error is calling dev.off() as the error will have left a connection to the png file open. To fix the error you have to define a variable couleursIn with colors with alpha values if you want to create similar venn diagrams as the default ones but with different colors:
Note the 80 at the end of each color which stands for an alpha value of 128 which is 50%. This can be checked with col2rgb("#90BA6E80", alpha = TRUE).