The clothing will blend its current color with the item's color. Stronger items (like Fire Quartz for Red) will change the color more drastically than weak ones.
Stardew Valley offers two primary ways to dye your clothes once you unlock the ability. According to guides from Screen Rant and Stardew Valley Wiki , here is how you can customize your wardrobe: 🔓 How to Unlock The clothing will blend its current color with
Put a colored item in the top-right spool slot. The clothing will blend its current color with
Using a Prismatic Shard or a Rainbow Shell in the spool slot immediately opens the color slider menu without needing the six separate dye pot items. The clothing will blend its current color with