Decent Results, Stressful Process

I finished my Invisalign treatment about 2 months ago, and am just wearing the retainer at night. I see a huge improvement, and other people have also noticed. The results arent perfect, as it has created some gaping that I wasn't expecting and that I didn't see in the visuals presented to me before treatment. My dentist did slightly adjust the shape of some teeth that had been affected by my bruxism in their old position, but he says he cant fix the gaps. My biggest two problems during the treatment were:

1. The attachments were done with a shade matched resin, but they stained so badly, so quickly. it made some of my teeth appear extremely yellow but the teeth without attachments were still quite white, so it looked pretty crazy. No oral care or dietary changes reduced this, and when I got my attachments switched out, it happened again. Obviously they come off at the end, but it was awful having half yellow teeth for nearly a year during treatment.

2. The decreased eating time which caused me to lose 15lbs that I couldn't afford as somebody already very small. I had to change my diet significantly to higher calorie foods and decrease my activity to gain it back.