Hello and thank you for checking out my post. I am looking for some good camping and fishing spots, preferribly ones that you have to backpack in a little ways. I don't really want to camp in an actually campsite. However I do have an upcoming camping trip I am trying to put together with some folks that will not be able to hike to a spot. So if you know a couple "car camping" spots near some water to that would be great.
You have asked an extremely broad question, such that it's actually hard to answer. However, here are some areas that I like and have plenty of great backpacking options to lakes that will have good trout fishing:
1. Indian Peaks Wilderness area
2. Collegiate Peaks Wilderness area
3. Fossil Ridge Wilderness area
4. Rawah Wilderness area
In short, there are hundreds of great lake destinations in Colorado. Get yourself a couple books and get to know certain areas by readin the books. Here are links to two; one on Colorado lake hikes, and another on hiking Colorado's wilderness areas. Good luck.
I second the Rawah. The Sangre de Cristo Range has some of the best high lake fishing you will ever find. If you have a decent clearance vehicle in the San Juans Clear Lake from Mineral Creek is pretty darn nice. 8 years ago they were pulling 18 inchers out.