According to this issue, and the documentation here we should be able to change colors of default blocks by doing
Blockly.Msg.LOGIC_HUE = "#C554AB";
but that doesn't seem to be working with React-Blockly. What is the correct way to achieve this?
Edit: I am using v6 and its README says a custom colour property can be passed to the blocks entry in toolboxCategories but that doesn't seem to work either.