Am i being too picky?

Unfortunately you don't get to call the shots on anyone's wardrobe, other than the wedding party. I wouldn't think you'll ever even notice it at all anyway, as those are tiny details.

Hey there! So, first of all, congrats on your upcoming wedding! It sounds like you have some awesome color choices for your big day. As for the whole mom situation, I totally get your concern, but let's not stress too much. It's their day to shine too, you know? Maybe you could have a friendly chat with your future MIL and express your thoughts about the bright red nails. Who knows, she might be open to compromising and find a great color that still adds that pop she wants while not clashing with the overall theme. Remember, it's all about spreading those positive vibes and making sure everyone feels comfortable and happy. Trust me, everything will work out just fine! Have a blast and enjoy every moment of your special day!

it's a special day for everyone involved, and compromise can go a long way. Perhaps you can suggest some other ways she can add a pop of red that fits within the color scheme, like a beautiful accessory or a vibrant bouquet.

It's your wedding, do what you want. It's your day. It's not about them. If they're going to be showcased down the aisle and you're paying they should fall in line.

That's not how it works though. It's not just your day once you involve other people. Then their needs and feelings have to be considered too.

Also I don't think the OP is paying for her future mother in law's nails.