Why do good products inevitably get changed?

I've been so lucky in that at 74 I only have strands of grey hair at the front. I've been using Indola styling mousse in medium brown shade for a long time with great success. You've guessed what I'm going to say...it's been "improved" and is a now a yucky dark brown and not right for me at all. Light brown doesn't exist, just a light hazel brown which the reviews state has a red effect. Can anyone suggest an alternative that they've used with good results please?