I wrote down some of Gekomatsu's quotes from Naruto Shippūden: Ultimate Ninja Storm 3, that I thought could be added to his character page. I didn't want to edit the article out of the blue so I'm listing them here:
"I've been waiting! The color changed, didn't it! Hurry, let me see!" -When greeting him
"The color's changed again! Terrific! I'm really happy!!" -If the color has actually changed
"*Ribbit*! That's all right! Just keep this up, and I'm sure it'll be shining in all the colors of the rainbow soon!!"
"All right! Since the color's changed, I'll give you a present! I'm going to use that jutsu!"
"Here I go! That ninja, this ninja! The jutsu that makes chakra entities of all kinds of ninja!"
"Presenting...chakra entities! *ribbit*"
"*Ribbit*! I think the Frog Stone is getting closer to rainbow-colored little by little!"
"Keep doing what you're doing!!"
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"Get out there and collect those fragments! I know you can do it! *ribbit*" -If spoken to again
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"It hasn't changed... I shouldn't have gotten my hopes up!" -After Naruto's greeting if it hasn't.
"Awww..."
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"I hope it's changed next time..." -If spoken to again (when it hasn't changed)