Lots and lots of quilters say they need help with colour. There are lots and lots of books, resources and people to help. Look at magazines, especially food and décor ones, for ideas about what colours appeal to you.
Dritz has a colour wheel that you can carry with you when looking for fabric. I have had a larger version for years but this purse size one is a much easier tool to carry. We can use it when you come looking for fabric. The picture isn't the best but if you can make it out, the wheel has holes in it so you can lay the opening over the fabric and see what hue it is. The smaller centre wheel turns so you can see which colours are complimentary and analogous.