Don't worry, be happy.
Learning to adjust to changed colouring is an interesting part of life's journey.
These are some of the things I have gradually realized as my hair has turned from dark to salt & pepper to silver:
● Clear cool colours definitely suit my present colouring better than beige, brown, blush, olive, rust, etc. Muted colours might still look nice as (minor) part of patterns I wear. But generally, I no longer want to wear them as solids. Taupe works if it looks harmonious with the clear greys (light, medium and dark) that are my primary neutrals now.
● Clear strong red makes me look pale. Slightly softer blue-reds are much better.
● All purples, including lilac, look even better with my present colouring than they did when I was darker.
● Teal, which I never wore when I was younger, looks interesting with my present colouring and is an easy match with lots of colours in my wardrobe.
● I want to add deep blue to my neutrals. (My other neutrals are white, silver, greys and black.) For many years, I found deep blue a bit boring and prefered black. Now I find that deep blue looks perfect with my colouring, is softer than black and emphasizes the blue colours in my eyes.
● White footwear and white bottoms (jeans, pants, skirts, etc.) kind of bookend my hair. I no longer feel the need to repeat the white colour somewhere on my upper body or near my face, as I did when my hair was dark. But of course, I still wear white blouses, white pearls etc.--when I want to.
● While most black&white prints/patterns used to serve me well, this is not automatically the case now, so I feel the need to be more careful when selecting prints and patterns. For instance, some black patterns on white background now look either uninteresting or harsh or distracting. (I want ME to wear my colours and patterns--not THEM to wear me. ) Interestingly, if just a little amount of grey is included in such patterns, they work much better. Generally, medium-contrast patterns now seem to be more flattering than high-contrast patterns in black & white. However, small and medium-scale patterns with equal amounts of black and white (e.g. tweeds and checks) still work.
● Charcoal often looks surprisingly better than black. Charcoal items with white pinstripes are versatile and look amazing teamed with non-neutrals in clear cool colours like pink, blue and turquoise.
● White or silver/grey patterns on black background soften the black and look harmonious on me, provided they are not too large or busy.
● Though I still like to wear solid black, I don't want it in large amounts near my face. So no more black turtlenecks, scarves, hats, etc.
● I look and feel best when I wear a non-neutral somewhere near my face. It has become natural to me to include at least one non-neutral in every outfit.
By the way, I can't say I feel invisible, as I almost daily get compliments from younger colleagues and sometimes from complete strangers too. A few days ago, when I was seated in a bus, a woman around 40 years younger than me rose from her seat and came up to me to tell me how much she liked my outfit, while other passengers smilingly agreed. (In case you are wondering, I was wearing a silver lurex skirt, black riding boots, icy white puffer jacket and a patterned scarf in purple, blue, white, grey and black.)