Finding blue watches around the house will increase your current and maximum watch capacity.

Day 1:
Loop the Entrance all the way to the right (check the map if you're not sure). Acquire the watch. Reset day (press R).

Red:

There are 25 bears in the ToyRoom and 25 rooms in the house. You need to duplicate the ToyRoom until it exists in the location on the map where the angry bear appears on the shelf.

Orange:

Find the Marlin Spike in the Attic then bring it down to the Dungeon and untie the rats.

Yellow:

Head to the BoilerRoom. Turn the red switch off.
Head to the Bathroom and read the sheet music.
Head to the MusicRoom and enter "7009 7009" on the piano keys.

Green:

Head to the BellTower. Approach the bell. It will  display another sequence of notes to enter in the MusicRoom.
Head to the MusicRoom and enter "5565455 55654321" on the piano keys.

Cyan:

Use the watch on the Entrance's left door. Grab the key in the FrontYard. Return to the Entrance.
Use the watch to travel right until you reach the DiningRoom.
Use the watch and the key to enter the BackYard.
Press the floor tiles until the sign says "LOOP POOL" (the O's in the middle of each must touch).

Indigo:

Every time you Loop a FanRoom the speed of the fan increases.
Loop the FanRoom 5 times and it will reach max speed, producing a gust of air.
Now you need to make this gust travel throughout the house all the way to the roof (but it will be blocked by rooms that don't have a top and bottom door).
The gust will blow away the pigeons on the roof revealing a diamond shape button to press.

Violet:

The location of each candle room is shown above. You must acquire 10 candles and bring them to the SeanceRoom.
Note that candles will stay in your inventory when resetting a day.
Getting to the Study from the Library has a trick. You can also Loop from a different room and get to the Study the easy way.

Now that all the color puzzles are solved head to the TreasureRoom!