Is it possible for a stain to change color based on temperature? Because the guitar came to me cold as ice and the center looked gray/ice blue, and it's obviously warmed up by now. Here's what it looks like as of yesterday. I swear the center opened up in the increase of temperature, allowing the stain/paint to sink deeper into the wood, revealing the natural wood.
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A finish can change over time and darken or lighten (depending on the circumstances), but I HIGHLY doubt that would happen over the course of a few weeks or months. Usually that kind of change happens over YEARS. Maybe your cataracts and glaucoma is cured from certain "activities" you were taking part in over the weekend on 4/20 and your vision is cleared up now?