This RYB to memory premise is really cool! The story is engaging as well. I read on the itch page that you plan to add to this game, so I look forward to learning more about the story.
The music set the mood, but I think some sound effects could've helped a lot too. For example, picking up the whisk and hearing the sound of someone whisking something. Or when switching between RYB, hearing a sound that also invokes the mood that goes with the colour/scene would be nice.
The objects weren't too challenging to find. When first looking around, I expected to be able to open some cupboards, the fridge, and so on. Having some items that are interactable but not the object to find could be a way tell more of the story too.
During the conversations, it felt off to press next on the player's text box when the other person was speaking. It was nice to be able to keep the mouse in the same spot but maybe just let the player click anywhere to advance the text?
One other thing would be that having some kind of visual indicator that the player's mouse is hovering over a button would be nice.
Well done overall! I bet the artwork took a while to draw.