In the graphics options within DD, you can change the darkness setting to 50 to increase the light range, and maybe bump up the gamma a bit to lighten the screen. That should make it easier to see levers, loot, etc.
They did drop the 'Divine' from the sequels, both Beyond Divinity and the upcoming Divinity 2: Ego Draconis (which has an XBox/PC release forecast for this summer; no exact date had been mentioned).
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