Unbreak IdeaVim WhichKey plugin

[denblackstache]

Problem

IdeaVim WhichKey crashes with java.lang.NullPointerException: getForegroundColor(...) must not be null.
https://github.com/TheBlob42/idea-which-key/blob/main/src/main/kotlin/eu/theblob42/idea/whichkey/config/FormatConfig.kt#L21

Stacktrace

java.lang.NullPointerException: getForegroundColor(...) must not be null
	at eu.theblob42.idea.whichkey.config.FormatConfig.getDefaultKeywordColor(FormatConfig.kt:21)
	at eu.theblob42.idea.whichkey.config.FormatConfig.getDescPrefixColor(FormatConfig.kt:89)
	at eu.theblob42.idea.whichkey.config.FormatConfig.formatMappingEntry(FormatConfig.kt:121)
	at eu.theblob42.idea.whichkey.config.PopupConfig.showPopup(PopupConfig.kt:101)
	at eu.theblob42.idea.whichkey.WhichKeyTypeActionHandler.beforeExecute(WhichKeyTypeActionHandler.kt:66)
	...

Solution

Set up the default keyword color

P.S. I'm open to suggestions on how this can be done in the right way.