with color do you mean with fish, corals, or both. If you intend to have corals, the lighting will be a bit tricky because its a corner tank. It would be easiest if you have a picture of the top of the tank, with dimensions so we could recommend the best lighting for the cheapest dollar sorda thing.
If you want fish, you MUST research everything before your first purchase. Find fish you like and then post the list and we can give you any options/ideas on the list. Things to add or get rid of.
80lbs of rock will work very well for the stack up. Try purchasing larger base rock (dead rock will be cheap) and then get some medium sized rock, and then some smaller to cap it off. The smaller rocks should be purchased as live rock, this will help seed the tank, and will get the initial cycle on its way.
Be sure to have the best source of water. RO/DI is the best choice and you can purchase your own unit or buy it from the store. For a tank your size, i would just invest in getting a 25-35 GPD unit and call it good.
When cycling the tank, just use a piece of shrimp in a nylon and let that rot for about 2-3 weeks. After that mark, take the shrimp out and let the levels fall on there own. Once the levels are down to acceptable levels then start with the Water Changes and then get a cleanup crew list for us. This will consist of hermits, snails, etc....
Hold off on adding your first fish for about 2 months. The cleanup crew will go in right after the cycle. This will keep the tank going and also add some life.
I might also suggest some books to read up on. If intending to keep corals then get some species books on corals and fish. This will give you care levels, types of foods required, etc....
another thing you should give us is a price list for equiptment. remember this will consist of appropriate filtration, skimmer, lighting, test kits, nets, buckets, etc....