Blue LEDs are the worst offenders. No need to return it as long as you keep a bit of black tape ready. If you still need it as an indicator, you can use layers of yellowish tape. The one used while painting your walls works great. Masking tape it’s called in English.

I would recommend buying used as well. Take a look at senmotic shoes. They are expensive but are also the most durable barefoot shoes I have found.