The text message conversations between the chapters are good. The chapters themselves are oddly twee, as if written in the 1950s. I think it's the parts where

The text message conversations between the chapters are good. The chapters themselves are oddly twee, as if written in the 1950s. I think it's the parts where you talk to the reader in the present tense, to directly describe the characters, that give that impression. It's kind of babying for something generally written at a YA level. In fact you mix present and past tense from the first paragraph, that's not good, choose one and stick to it. I'm not at all sure about that cat flipping the switch, either. How does it generate more than one 0 or 1 in a row? Also: when we mix red paint with green paint, it becomes gray-brown paint, not yellow paint. When we mix red light with green light it becomes (perceptually) yellow light, because that's additive mixing, which does not apply to paint. OTOH perhaps this future art studio uses digital paint, which might work how you want it to, but that's not made clear. https://en.wikipedia.org/wiki/Additive_color https://en.wikipedia.org/wiki/Additive_color https://en.wikipedia.org/wiki/Subtractive_color https://en.wikipedia.org/wiki/Subtractive_color