1. red, or a color that uses red, for example purple or orange
2. blue or a color that contains blue
3. green or a color related to green
4. yellow, or one that is related to yellow
Marian also says that a combination of 3 analogous colors and their compliment would also work well... of course, this also follows the rules to the above 4 colors if you use them all!
Keeping all these guidelines in mind, here are some combinations I came up with while playing in the paint program:
My favorite so far was combination #3. I made a warp using colors from #3. Marian also suggests grouping your colors in order that they would appear on the color wheel. The way they are in the picture would follow this rule.
Here is my virtual practice warp following combination #3:
I wanted to see what this one would look like with different wefts:
Here are some experimental wefts for my virtual warp close-up:
Honestly, I am not a purple person, but I really like the purple warp. I wonder if it's because it's 1. different from all the other colors involved, and 2. brings out the complimentary blue color. Also, it's dark and makes the other colors pop.