Starburst (the subject of a previous thread about the new betta that spit all his food out for 8 days) is a much happier fish now. I don't know whether time did its trick, or whether the things I changed helped (covered front of bowl for less stimulation, turned heat up, added bigger plant). He's been eating well for two days now, and today started building a respectable bubble nest. Interestingly, over the past few days, he's also developed a lot more blue coloration on him (my avatar was him a week ago, below is a picture today). I'm glad he's happy, although I must admit I did like his coloration before with more white.
Is this common?