The room has changed color! What is going on?

Hint 1 of 7:

You have entered the dream dimension.

Hint 2 of 7:

Exploring the house in this mode is very different.

Hint 3 of 7:

Your relatives are nowhere to be found!

Hint 4 of 7:

You will find you can enter areas of the house that were off limits in real
time.

Hint 5 of 7:

Search the house.

Hint 6 of 7:

Look for your reflection in an item nearby.

Hint 7 of 7:

You can enter someone else's dream through that reflection.