Mom, I'm really glad that you're home but sorry that you've had such a difficult time. I agree, hospitals are the pits especially when you feel ran over by a truck. Was your surgery laproscopic?
I was in the hospital for 9 days, and when I got home I was really sore and always nauseous around food. I never had problems going to the bathroom though, mine just wouldn't ever stop but mine was the same color as yours, too.
As for diet, I was told to eat a bland diet, too. At first I ate crackers and peanut butter (you need the protein). I'm seeing a nutritionist right now because of all the weight loss I've had and it's easy for us without colons to become malnourished and dehydrated. Right now, I have a vitamin D deficiency.
Keep the fluids coming. I hate drinking water, so I drink lots of Crystal Light Hydration (it's pink) and it has lots of electrolytes. Also, I drink lots of FUZE slenderize. They're in tall bottles and have all kinds of great vitamins and minerals in them for us.
I ate scrambled eggs and muffins. Muffins are great for you right now and have some substance to them. Optima oatmeal raisin protein bars are good. They are for diabetics (even though I'm not) and low fat and calories.
If you have troubles going to the bathroom, try some sugarfee chocolate. I've been constipated only twice since surgery last August, but you don't want that, trust me. It hurts because we have a tiny hole after the colectomy. Dove or reecee peanut butter cups are good. Prune juice works well and turned me into water bowel movements. If I can't go for a day, that's what I'll do because I get nervous otherwise, too. My nutritionist says that anything with sugar alcohol in the list on the back of a package helps, too. It's listed under calories, fats, etc...
You want to eat soft foods at first. Rule of thumb, chew and chew everything. The more you have to chew something, the harder it is for you to digest. Your body isn't used to it's new functions yet.
I still have pains once in awhile. Maybe too personal, but when I make love with my husband sometimes I feel like my scar is stretched and wants to pull apart. 
That makes me back off.. I had laproscopic which ended up open surgery too, though.
Eating 5-6 small meals a day is the way to go. 
Trust your doctor and me on this. Otherwise, my stomach bloated and I felt like I couldn't move. Now, if I miss snacktime (which I sometime did), I feel like I'm going to pass out. My nutritionist says that I get low blood sugar levels by doing that. Because I eat smaller portions and excercise alot (walking and elyptical, per doc I have to excercise for the rest of my life due to motility disorder), it speeds up my metabolism and my body burns thru the calories. That's how we can get malnourished so easily. Be careful of this.
I used to be a big woman, I've gone from a size 18 to a size 6! I love it, but have got to be very careful. Also, along with the bland diet we should have a high calorie and low fat diet for best health.
If you can, find a nutritionist as soon as possible and you'll never be sorry. I've had a horrible time finding one that wasn't scared of me. Most nutritionists want to help obese people lose weight and diabetic management. They don't know what in the heck to do with someone with a colectomy and lots of weightloss.. My weightloss is due to smaller meals, exercising, and eating really healthy. I can't eat chocolate, fried foods, red meat, or crunchy things anymore. They really bother me. I eat loads of chicken, turkey, fish, and spaghetti.. I eat lots of baked potatoes, too (don't eat skins anymore..)
I hope this helps some and that you get some rest tonite.. Glad that you're back. 
butterfly