Customizing the Houdini Interface
From kunz
Slate Theme from Odforce Houdini Color Window
Some aspects of Houdini can only be customized through Setting Houdini Environment Variables.
You can customize the following Houdini Environment Variables by adding this to $HOME/houdiniX.x/houdini.env
HOUDINI_SPLASH_FILE = ~/hsplash/hsplash_014.png
HOUDINI_SPLASH_MESSAGE = WELCOME ${USER}@${HOSTNAME}\\nVERSION: ${HOUDINI_VERSION}
HOUDINI_UI_QUEUE_SIZE = 2500000
HOUDINI_NO_START_PAGE_SPLASH = 1
HOUDINI_MAX_FILE_HISTORY = 32
HOUDINI_ENABLE_OLD_PRESETS = 1
HOUDINI_USE_OTL_AS_DEFAULT_HDA_EXT = 1