Solar I and Solar II have flipped textures

Issue description

Not only is the darker panel's color closer to the icon of the mono cells, but better panels are supposed to absorb more light and reflect less, thus appearing darker, right?

Reproduction steps

n.a.

Game version and build number

v0.8.8

Which branch of the game are you on?

Stable

Operating system

Windows

there are inperfections on normal cells (left), mono cells are completely flat(right)

guess that's intended

huh... I guess that works too, but its still weird that the light/dark relationship is inverted compared to the icons.