After a client asked me to build a website with very specific colors (grey and white) and even giving me a website to base the design off of:

Client: There isn’t enough color on the site.

Me: But you specifically asked for only grey and white.

Client: I know, but it doesn’t have enough color.

Me: Okay, we’ll tweak the original idea. Did you have any colours in mind?

Client: Let’s go with something bright and matching.

Me: Luckily, almost any color will go with white and grey as the base palette.

Client: How about black?

Me: …especially black.