Do your colors change when you go gray? Years ago, when my hair was still its natural red color, I was a warm spring. Now I’m graying, people think I’m blonde, will those colors still work for me?

You may need to adapt the colour analysis. The Kettlewell Colours website is a good source of information and has an article called "Does your seasonal palette change as you grow older?". It says your colour season does not change, but you may need to choose the colours that are lighter and brighter - or softer and warmer - within that original season colour range. Advises that you experiment with the shades.