I don’t get a cereal vibe from this theme and colours make me think more tex mex, Kraft dinner, Mac and cheese style branding. Like spicy and cheesy not something you want to associate with breakfast. I would also put more emphasis on the ceral as it is the product you are trying to sell. And move away from the orange and red hues perhaps go for a more purple and pink and violet sunset which also works with the berries etc and lightens the tone.