Every copy of "Color My World" that I've seen is written in 4/4 with a 12/8 feel. You could write the melody in 6/8, but it would look funny. Even the words have a 4/4-12/8 feel. For the most part 6/8 is used in a lot of marches. The old pop slow songs of the '50's are 4/4 with a 12/8 feel. If you want to divide the measures of "Color My World" into 6/8, it's technically correct but the end result is still 4/4-12/8. Later, Ray