Being colorblind myself, I used to be envious of people who could see more colors than me. I still am, to some extent. Though, over the years I picked up on an upside to it. Since I'm unable to see as many colors when viewing the world, I tend to pick up changes in motion much more quickly than people around me.

It makes me fairly proficient at driving, dodging moving obstacles while doing any physical activiy, and fast-paced games (like FPS) - even if the trade off is that I occasionally killed teammates because I couldn't see the color differences between players at times.

Everything has it's pros and cones (pun :D)

Like the other commenter I too am partially colorblind. I don't know how my exact condition is called, but it's very minor. In those online tests with many-many reddish, greenish and yellowish dots I fail to read the symbol or a number in about 1-2 cases out of 20. So, in real world I can see most reds and greens, and it's not a big deal for me. However, due to my condition and her abilities our differences in color perception come up a lot more often than one might think. Surprisingly, we found out about it after about 2 years of being together :D

Of course I envy her, but I mostly just happy that she can experience some aspects of our world better than most other people. It's like with talents: the fact that someone has a particular talent or skill that you lack doesn't make you hate this person. Instead you ask them to show it off, they do, you "Oo-ooh!" and "Aa-aah!", they feel really good about themselves and you're both happy.

Sometimes she is sad I can't appreciate something she sees, but we don't dwell on it. She would often describe the shape or a pattern she sees and I try to picture it and say something like "Oh that's neat!".

Also, there are some clothing items I never combine, and I always ask her for advice when I select my cloths, or colors for my presentation or charts.

Colors are very cool. I wish we could have some kind of tech that would allow us to see colors like some birds or aquatic species do. These days there are glasses for colorblind people to give them some extended color perception, so the tech is making some baby steps.

I think envy is instinctual in gregarious animals. It's a mechanism for social balancing. You can't stop the feeling except to be at the top of the social hierarchy. You can control your behavior when you feel it though.

You can practice by surrounding yourself with people better than you. Play games with people better than you. Find mentors.

Grow as a person so you love yourself rather than envy others. Recognize that almost everyone has something you don't. Better than you at something.

Reflect on the great things about yourself. Remember who you are. Where you started.

Be good. Be true to yourself. Develop your moral code. Treat all with respect and love. Including you with all your imperfections.

There are always tradeoffs. I understand that men get better hand eye coordination for their lack of color distinction