Good. That makes it more G1 accurate. The original Thundercracker toy has a beautiful dark metallic blue, whereas the G1 cartoon gave him a light sky blue. Classics Thundercracker is a "mid" blue - not as dark as the original toy, but not as light as the cartoon (I'm guessing this was done as a compromise to appease both people who prefer the original dark blue and those who prefer cartoon sky blue). Gentei Thundercracker's blue is lighter, though not quite as light as the cartoon. Robot Masters Thundercracker has the most cartoon-like colours IMO.
Pics for reference
G1 & Gentei Thundercracker:
Note: That's an Encore reissue Thundercracker which isn't as metallic as an original G1 Thundercracker.
Classics Decepticon Jets:
Robot Masters Thundercracker