$ silicon -o debug.png -l sh --theme Coldark-Dark <<<'// This is a type for a single proposal.
struct Proposal {
    bytes32 name;   // short name (up to 32 bytes)
    uint voteCount; // number of accumulated votes
}'

$ silicon -o debug.png -l sol --theme Coldark-Dark <<<'// This is a type for a single proposal.
struct Proposal {
    bytes32 name;   // short name (up to 32 bytes)
    uint voteCount; // number of accumulated votes
}'
[error] Unsupported language: sol
$ silicon -o debug.png -l Solidity --theme Coldark-Dark <<<'// This is a type for a single proposal.
struct Proposal {
    bytes32 name;   // short name (up to 32 bytes)
    uint voteCount; // number of accumulated votes
}'
[error] Unsupported language: Solidity

$ batcat --list-languages | grep -i solidity
Solidity:sol
$ batcat --version
bat 0.19.0
$ silicon --version
silicon 0.4.3
$ grep -Ei 'name|version' /etc/os-release