Design an app icon for Opaque featuring a vertical cross-section of a wall. The illustration should clearly show material layers, highlighting insulation and opacity. Use a clean, modern style with subtle colors or a black-and-white scheme to emphasize structure, depth, and light control in a minimalist yet informative way.
Design an app icon for Opaque featuring a vertical cross-section of a wall. The illustration should clearly show material layers, highlighting insulation and opacity. Use a clean, modern style with subtle colors or a black-and-white scheme to emphasize structure, depth, and light control in a minimalist yet informative way.