Here’s one article where I describe a technique for using color chips: https://diymfa.com/writing/true-colors-using-color-theory-to-boost-your-writing

For the dice, I’ll often assign different POV to each number, or a different word/character/setting to each number, then roll the die and give myself a random writing prompt. It’s like a portable version of the Writer Igniter https://writerigniter.com