I'm 56 and have a similar pair of Sketchers which I wear to the gym. In fact, I think mine are brighter.

If my gym bag wasn't in the boot of my car in my carport 44 steps down, I would show you the evidence..lol.

My goodness, I'm overwhelmed with all your responses! I'm delighted to have such encouragement (or is that enabling?) to try out bright shoes. Sorry to not reply sooner - sleep and work and all that in the way.
Thank you Glory, crutcher, chadya, Ms Mary, rachylou, cjh, Maneera, Gigi Brooklyn and Dianne G, and CocoC.
Beth Ann, I've heard these are very comfy shoes, and I sort of assumed they are designed for casual wear rather than serious running. They aren't what I'd consider cheap shoes, will consider whether they'll be good value for me.
Peri, I like that you see them as fun and trendy, they do seem fun to me. Linda , I want to have some fun in my wardrobe.

Unfrumped and Robin, this is the real question: are these my style? I think I could have fun with them, and see if I feel good in them as Deborah suggests.
Alaskagirl, I hope it was a good flashback to school camp!
Cheryle and kkards, I agree everything else would have to be kept simple with these shoes. Sandy G, I can do the basics. Sleek, maybe. Ironic might be beyond me... No jogging suits, though.

I will go try them on in the local shoe shop, and see how they make me feel. Thank you all again for your wonderful replies. I'll keep you posted.

Get 'em!! My sneakers these days are always bright! I bought some practically neon yellow runners when I was training for a half marathon a couple years ago and I swear they give me energy. So now I always buy bright! They mix into casual wear too, why not? (I'm 42 too ;))

I'm 49 and I wear bright running shoes when I'm working out. I'll always wear black or grey leggings when I do though. If they make you happy, go for it.

You're never too old for colorful sneakers! In my normal day-to-day wardrobe I wear mostly earthy colors and neutrals, but my running shoes and tanks are always bright colors and neons. I think they give me a little boost!

Thanks, jackiec, Banoffi, and kerlyn. They are such happy shoes to me. I'm sure they'd lift the mood whenever I wore them.
PS I did buy them. DD was delighted. Haven't taken them out of he box yet, though.