This research demonstrates that our all-solution-processable fabrication process can be effectively applied to various 3D curved objects, transforming them into dynamically controlled electrochromic devices. By spray-coating carbon nanotubes to form networks, aqueous PEDOT:PSS solution can penetrate these networks and create a heterogeneous mixed ionic-electronic conductor on the object's surface conformally. This layer facilitates simultaneous vertical ion transport and horizontal electrical transport, leading to enhanced electrochromic reactions that can tune the object's emissivity. The FTIR data and thermal images validate the success of this concept, showing a Δε = 0.195 thermal emissivity contrast with robust durability and an apparent temperature difference of 6.1 ℃ on planar devices and 1.8 ℃ on 3D curved devices.