Gina Hart

Megatron shouldn't havve posed for his boxart in a bright yellow room.

Gina Hart was a long-term colourist on Transformers & other titles for Marvel UK.

In Megatron's early UK appearances, she coloured his gold to match his original box art, a practice followed by another early UK colourist, Steve Whitaker.

From Teletraan I: The Transformers Wiki, a Wikia wiki.