Mr Hobby v. Mr Hobby...What's the Difference?

G'day,

I've just seen at a local hobby store two types of Mr Hobby Thinner, they are:

- Mr Hobby Gunze Sangyo Thinner 110 (light blue label); and

- Mr Hobby Mr Color Thinner 110 (dark blue label).

Can anybody tell me what is the difference??

(PS, i use the former with GS Paints with great results, but am curious anyhow).

cml