I'm working on a website. The entire site is thematically designed around three colors (red, blue, yellow) which correspond to the three products. Now we are adding a fourth product, which will break this symmetry.
I'm on the fence about introducing another color for the fourth product or playing with the colors I have. If I introduce another color for this product, then I'll need to do the same for the next and the next. The vision is that there will be many more. On the other hand, there is currently a strong color-product association built into the site that makes things clear for the user. Duplicating a color for two products will muddy these waters.
I'm not sure which course of action will be the clearest for the user and allow best for continued product growth:
1). Add a new color to keep color-product association.
2). Stick with 3 colors, allowing 1 color to be associated with 2 products.
3). Stick with 3 colors, breaking the color-product association with random usage.
Which approach makes the most sense?