Dobro! :) ... Original and creative. Like FONT, like Color of TEXT (very dark blue) and PLUS (lighter). Perhaps + could be bigger, potentially same height as B. Good balance. Like 3D feel of Brain (incl. shadow effect). Good balance on Slogan. Good that brain is a bit playful.
Hey there! Really like the light effect you put on #102, really cool. Can you make a "warmer" versions, fx. a orange, yellow, rosa, version. And can you do the light effect on your original #13 rainbow.
Nice, the yellow orange is really nice, full of ENERGY :) ..... can you try some variations of RED and some of PURPLE.. it could be that the logo could be used in different colors for different purposes. :)