I like the adjustment to the lambda; it better emphasizes that it's meant to evoke an A, which is nice.
Regarding the color, it feels muted, to me; but, likewise, I'm not a designer (anything I do know has only been via observation) and I don't know enough regarding Chinese color schemes to confidently offer any alternative, unfortunately (at least, not without forming likely nonsensical symbolic significance).
The one thing I would feel (relatively) confident in saying is, perhaps, not having the lambda host all the colors in the more compact version. Part of why I'd shifted two of the colors from the lambda when parentheses were introduced was to avoid overloading the viewer.
When the only symbol in the logo is just the lambda, having all of the colors there makes sense as it's the only area which draws the viewer to have to digest what's going on; they already have to register that it's not, in fact, an "A" but a "λ" so registering colors in the same location should be O. K.
But, with the parentheses (which aren't just additional characters but also at both the beginning and end of the logo), you then have to register the lambda, that that parentheses are invoking LISP/Scheme, the different colors going on, and that those colors are in multiple places.
Using a single color for the lambda, with your new design for the compact form, does have the advantage of emphasizing (or making more clear?) that the "A" is made up from a "λ". You do have the drawback that it looks different from how the A/λ is designed in the longer/spelled-out form of the logo but the strict usage of all the original colors should, hopefully, reduce any possible confusion.
Using the previous image I'd attached to compare against other, existing logos, I've put your new design and then the same one but with the simplified color scheme to hopefully make it easier to say whether I'm making any sense or not.
web-development-frameworks_2.png
web-development-frameworks_1.png