Hello and welcome to FF Jessifer! First of all, please read this article to get info on your toad needs: Frog Forum - Toad Basics - Keeping ground-dwelling Toads. A care sheet for Bufo, Anaxyrus, Spea, Scaphiopus, Ollotis, Alytes, Pelobates.

Things you want to watch for, are that the tap water is dechlorinated (for bath dish and mixing with substrate). Crickets should be sized same as distance between toad's eyes and gut loaded with carrots, lettuce, and crushed oats/cherios for 24-48 hours before feeding. Any uneaten crickets should be removed within a few hours or early next morning if feeding at night. You can also feed not dyed Canadian Night Crawlers cut from pointy end to same length as toad's body. Food supplements are very important, more info and sample schedules in here: http://www.frogforum.net/food-feeder...schedules.html.

American toads do not need a heat lamp if kept at room temperature. Most frogs and toads can sense Winter and will slow down their metabolism a bit. Check the information passed and let us know if there where anything missed in it's care. A color change can be normal depending on many things, but it could also mean something is amiss. Good luck !