set a visualized panel for selecting color randomly in shiny APP

Here, I was wondering if a visualized panel could be set for color selection randomly in a shiny APP. For example, in general, we could use 'selectInput' function to set a limited number of colors. But what if it's infinite?

colour pickers are available*, and are even not necessary to give your app a randomly coloured panel, just do it programmatically instead of looking to the user to manipulate a widget ?