Palette creation app

As a user I should be able to:

• Change each color of the palette
• Change the number of colors contained in the palette (minimum 2 and maximum 10)
• Clic on a button for each color which will randomize the associated color
• Clic on a button which will randomize all of the colors on the palette
• See each color in text form (RGB, HSL, HEX, you choose) so that I can copy and paste it inside another application
• "Lock" a color so that it isn't affected by the randomizing buttons anymore
• Generate a gradient palette based off one color. Meaning I should be able to specify one color, clic a button and have all the other colors turn into more or less (de)satured versions of the base color

Useful infos

• the javascript function to generate random numbers : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random
• the HTML element allowing the user to enter a color : https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/color
• all of the ways a color can be expressed : https://developer.mozilla.org/en-US/docs/Web/CSS/color_value